nitryl and stimulum merge in nitrium (#62061)

This PR is the first of a few were i'll be merging similar working gases into one.
This time is Nitryl and Stimulum. They'll be merged into Nitrium , a brown gas with both features of the two gases
The main scope is to add dept to atmos by removing bloated content and/or repeated content that has never seen the lights of the day (how many times have you seen both gases made and used at the same time?)
The PR so far:
-removed nitryl
-removed stimulum
-merged them into Nitrium (Nitrium is now made with trit, nitrogen and bz from a minimum temperature of 1500 K)
-made Nitrium have both gases features such as fast movements and sleep and stun immunity but increased damage taken
-Nitrium can make crystals that spread the chemicals with a cloud (is still far more efficient to just breathe the gas)

Less rare gases, going towards a better atmos gameplay loop

code/modules/atmospherics/gasmixtures/gas_types.dm

@@ -1,6 +1,6 @@
 GLOBAL_LIST_INIT(hardcoded_gases, list(/datum/gas/oxygen, /datum/gas/nitrogen, /datum/gas/carbon_dioxide, /datum/gas/plasma)) //the main four gases, which were at one time hardcoded
 //Now this is what I call history
-GLOBAL_LIST_INIT(nonreactive_gases, typecacheof(list(/datum/gas/oxygen, /datum/gas/nitrogen, /datum/gas/carbon_dioxide, /datum/gas/pluoxium, /datum/gas/stimulum, /datum/gas/nitryl))) //unable to react amongst themselves
+GLOBAL_LIST_INIT(nonreactive_gases, typecacheof(list(/datum/gas/oxygen, /datum/gas/nitrogen, /datum/gas/carbon_dioxide, /datum/gas/pluoxium))) //unable to react amongst themselves
 
 /proc/meta_gas_list()
 	. = subtypesof(/datum/gas)
@@ -121,15 +121,16 @@ GLOBAL_LIST_INIT(nonreactive_gases, typecacheof(list(/datum/gas/oxygen, /datum/g
 	purchaseable = TRUE
 	base_value = 3
 
-/datum/gas/nitryl
-	id = "no2"
-	specific_heat = 20
-	name = "Nitryl"
-	gas_overlay = "nitryl"
+/datum/gas/nitrium
+	id = "nitrium"
+	specific_heat = 10
+	name = "Nitrium"
+	fusion_power = 7
+	gas_overlay = "nitrium"
 	moles_visible = MOLES_GAS_VISIBLE
 	dangerous = TRUE
-	rarity = 100
-	base_value = 5
+	rarity = 1
+	base_value = 100
 
 /datum/gas/tritium
 	id = "tritium"
@@ -152,14 +153,6 @@ GLOBAL_LIST_INIT(nonreactive_gases, typecacheof(list(/datum/gas/oxygen, /datum/g
 	purchaseable = TRUE
 	base_value = 2
 
-/datum/gas/stimulum
-	id = "stim"
-	specific_heat = 5
-	name = "Stimulum"
-	fusion_power = 7
-	rarity = 1
-	base_value = 100
-
 /datum/gas/pluoxium
 	id = "pluox"
 	specific_heat = 80

code/modules/atmospherics/gasmixtures/reactions.dm

@@ -401,32 +401,33 @@
 			air.temperature = max(((temperature * old_heat_capacity + energy_used) / new_heat_capacity), TCMB) //the air heats up when reacting
 		return REACTING
 
-/datum/gas_reaction/nitryl_decomposition //The decomposition of nitryl. Exothermic. Requires oxygen as catalyst.
+/datum/gas_reaction/nitrium_decomposition //The decomposition of nitrium. Exothermic. Requires oxygen as catalyst.
 	priority_group = PRIORITY_PRE_FORMATION
-	name = "Nitryl Decomposition"
-	id = "nitryl_decomp"
+	name = "Nitrium Decomposition"
+	id = "nitrium_decomp"
 
-/datum/gas_reaction/nitryl_decomposition/init_reqs()
+/datum/gas_reaction/nitrium_decomposition/init_reqs()
 	requirements = list(
 		/datum/gas/oxygen = MINIMUM_MOLE_COUNT,
-		/datum/gas/nitryl = MINIMUM_MOLE_COUNT,
+		/datum/gas/nitrium = MINIMUM_MOLE_COUNT,
 		"MAX_TEMP" = T0C + 70 //Pretty warm, explicitly not fire temps. Time bombs are cool, but not that cool. If it makes you feel any better it's close
 	)
 
-/datum/gas_reaction/nitryl_decomposition/react(datum/gas_mixture/air)
+/datum/gas_reaction/nitrium_decomposition/react(datum/gas_mixture/air)
 	var/list/cached_gases = air.gases
 	var/temperature = air.temperature
 	var/old_heat_capacity = air.heat_capacity()
-	//This reaction is agressively slow. like, a tenth of a mole per fire slow. Keep that in mind
-	var/heat_efficency = min(temperature / (FIRE_MINIMUM_TEMPERATURE_TO_EXIST * 8), cached_gases[/datum/gas/nitryl][MOLES])
-	var/energy_produced = heat_efficency * NITRYL_DECOMPOSITION_ENERGY
 
-	if ((cached_gases[/datum/gas/nitryl][MOLES] - heat_efficency < 0)) //Shouldn't produce gas from nothing.
+	//This reaction is agressively slow. like, a tenth of a mole per fire slow. Keep that in mind
+	var/heat_efficency = min(temperature / (FIRE_MINIMUM_TEMPERATURE_TO_EXIST * 8), cached_gases[/datum/gas/nitrium][MOLES])
+	var/energy_produced = heat_efficency * NITRIUM_DECOMPOSITION_ENERGY
+
+	if ((cached_gases[/datum/gas/nitrium][MOLES] - heat_efficency < 0)) //Shouldn't produce gas from nothing.
 		return NO_REACTION
 
-	ASSERT_GAS(/datum/gas/nitrogen, air)
-	cached_gases[/datum/gas/nitryl][MOLES] -= heat_efficency
-	cached_gases[/datum/gas/oxygen][MOLES] += heat_efficency
+	air.assert_gases(/datum/gas/nitrogen, /datum/gas/hydrogen)
+	cached_gases[/datum/gas/nitrium][MOLES] -= heat_efficency
+	cached_gases[/datum/gas/hydrogen][MOLES] += heat_efficency
 	cached_gases[/datum/gas/nitrogen][MOLES] += heat_efficency
 
 	if(energy_produced> 0)
@@ -435,36 +436,34 @@
 			air.temperature = max(((temperature * old_heat_capacity + energy_produced) / new_heat_capacity), TCMB) //the air heats up when reacting
 		return REACTING
 
-/datum/gas_reaction/nitrylformation //The formation of nitryl. Endothermic. Requires bz.
+/datum/gas_reaction/nitrium_formation //The formation of nitrium. Endothermic. Requires bz.
 	priority_group = PRIORITY_FORMATION
-	name = "Nitryl formation"
-	id = "nitrylformation"
+	name = "Nitrium formation"
+	id = "nitrium_formation"
 
-/datum/gas_reaction/nitrylformation/init_reqs()
+/datum/gas_reaction/nitrium_formation/init_reqs()
 	requirements = list(
-		/datum/gas/oxygen = 10,
+		/datum/gas/tritium = 20,
 		/datum/gas/nitrogen = 10,
 		/datum/gas/bz = 5,
-		"MIN_TEMP" = 1500,
-		"MAX_TEMP" = 10000
+		"MIN_TEMP" = 1500
 	)
 
-/datum/gas_reaction/nitrylformation/react(datum/gas_mixture/air)
+/datum/gas_reaction/nitrium_formation/react(datum/gas_mixture/air)
 	var/list/cached_gases = air.gases
 	var/temperature = air.temperature
 
 	var/old_heat_capacity = air.heat_capacity()
-	var/heat_efficency = min(temperature / (FIRE_MINIMUM_TEMPERATURE_TO_EXIST * 8), cached_gases[/datum/gas/oxygen][MOLES], cached_gases[/datum/gas/nitrogen][MOLES], cached_gases[/datum/gas/bz][MOLES] * INVERSE(0.05))
-	var/energy_used = heat_efficency * NITRYL_FORMATION_ENERGY
-	ASSERT_GAS(/datum/gas/nitryl, air)
-	if ((cached_gases[/datum/gas/oxygen][MOLES] - heat_efficency < 0 ) || (cached_gases[/datum/gas/nitrogen][MOLES] - heat_efficency < 0) || (cached_gases[/datum/gas/bz][MOLES] - heat_efficency * 0.05 < 0)) //Shouldn't produce gas from nothing.
+	var/heat_efficency = min(temperature / (FIRE_MINIMUM_TEMPERATURE_TO_EXIST * 8), cached_gases[/datum/gas/tritium][MOLES], cached_gases[/datum/gas/nitrogen][MOLES], cached_gases[/datum/gas/bz][MOLES] * INVERSE(0.05))
+	var/energy_used = heat_efficency * NITRIUM_FORMATION_ENERGY
+	ASSERT_GAS(/datum/gas/nitrium, air)
+	if ((cached_gases[/datum/gas/tritium][MOLES] - heat_efficency < 0 ) || (cached_gases[/datum/gas/nitrogen][MOLES] - heat_efficency < 0) || (cached_gases[/datum/gas/bz][MOLES] - heat_efficency * 0.05 < 0)) //Shouldn't produce gas from nothing.
 		return NO_REACTION
 
-	ASSERT_GAS(/datum/gas/nitryl, air)
-	cached_gases[/datum/gas/oxygen][MOLES] -= heat_efficency
+	cached_gases[/datum/gas/tritium][MOLES] -= heat_efficency
 	cached_gases[/datum/gas/nitrogen][MOLES] -= heat_efficency
-	cached_gases[/datum/gas/bz][MOLES] -= heat_efficency * 0.05 //bz gets consumed to balance the nitryl production and not make it too common and/or easy
-	cached_gases[/datum/gas/nitryl][MOLES] += heat_efficency
+	cached_gases[/datum/gas/bz][MOLES] -= heat_efficency * 0.05 //bz gets consumed to balance the nitrium production and not make it too common and/or easy
+	cached_gases[/datum/gas/nitrium][MOLES] += heat_efficency
 
 	if(energy_used > 0)
 		var/new_heat_capacity = air.heat_capacity()
@@ -542,38 +541,6 @@
 			air.temperature = max(((temperature * old_heat_capacity - energy_used)/new_heat_capacity), TCMB)
 		return REACTING
 
-/datum/gas_reaction/stimformation //Stimulum formation follows a strange pattern of how effective it will be at a given temperature, having some multiple peaks and some large dropoffs. Exo and endo thermic.
-	priority_group = PRIORITY_FORMATION
-	name = "Stimulum formation"
-	id = "stimformation"
-
-/datum/gas_reaction/stimformation/init_reqs()
-	requirements = list(
-		/datum/gas/tritium = 30,
-		/datum/gas/bz = 20,
-		/datum/gas/nitryl = 30,
-		/datum/gas/plasma = MINIMUM_MOLE_COUNT,
-		"MIN_TEMP" = 1500)
-
-/datum/gas_reaction/stimformation/react(datum/gas_mixture/air)
-	var/list/cached_gases = air.gases
-
-	var/old_heat_capacity = air.heat_capacity()
-	var/heat_scale = min(air.temperature/STIMULUM_HEAT_SCALE, cached_gases[/datum/gas/tritium][MOLES], cached_gases[/datum/gas/plasma][MOLES], cached_gases[/datum/gas/nitryl][MOLES])
-	var/stim_energy_change = heat_scale + STIMULUM_FIRST_RISE * (heat_scale ** 2) - STIMULUM_FIRST_DROP * (heat_scale ** 3) + STIMULUM_SECOND_RISE * (heat_scale ** 4) - STIMULUM_ABSOLUTE_DROP * (heat_scale ** 5)
-	ASSERT_GAS(/datum/gas/stimulum, air)
-	if ((cached_gases[/datum/gas/tritium][MOLES] - heat_scale < 0 ) || (cached_gases[/datum/gas/nitryl][MOLES] - heat_scale < 0)) //Shouldn't produce gas from nothing.
-		return NO_REACTION
-	cached_gases[/datum/gas/tritium][MOLES] -= heat_scale
-	cached_gases[/datum/gas/nitryl][MOLES] -= heat_scale
-	cached_gases[/datum/gas/stimulum][MOLES] += heat_scale * 0.75
-
-	if(stim_energy_change)
-		var/new_heat_capacity = air.heat_capacity()
-		if(new_heat_capacity > MINIMUM_HEAT_CAPACITY)
-			air.temperature = max(((air.temperature * old_heat_capacity + stim_energy_change) / new_heat_capacity), TCMB)
-		return REACTING
-
 /datum/gas_reaction/nobliumformation //Hyper-Noblium formation is extrememly endothermic, but requires high temperatures to start. Due to its high mass, hyper-nobelium uses large amounts of nitrogen and tritium. BZ can be used as a catalyst to make it less endothermic.
 	priority_group = PRIORITY_FORMATION
 	name = "Hyper-Noblium condensation"
@@ -739,7 +706,7 @@
 /datum/gas_reaction/zauker_formation/init_reqs()
 	requirements = list(
 		/datum/gas/hypernoblium = MINIMUM_MOLE_COUNT,
-		/datum/gas/stimulum = MINIMUM_MOLE_COUNT,
+		/datum/gas/nitrium = MINIMUM_MOLE_COUNT,
 		"MIN_TEMP" = 50000,
 		"MAX_TEMP" = 75000
 	)
@@ -748,13 +715,13 @@
 	var/list/cached_gases = air.gases
 	var/temperature = air.temperature
 	var/old_heat_capacity = air.heat_capacity()
-	var/heat_efficency = min(temperature * 0.000005, cached_gases[/datum/gas/hypernoblium][MOLES] * INVERSE(0.01), cached_gases[/datum/gas/stimulum][MOLES] * INVERSE(0.5))
+	var/heat_efficency = min(temperature * 0.000005, cached_gases[/datum/gas/hypernoblium][MOLES] * INVERSE(0.01), cached_gases[/datum/gas/nitrium][MOLES] * INVERSE(0.5))
 	var/energy_used = heat_efficency * 5000
 	ASSERT_GAS(/datum/gas/zauker, air)
-	if ((cached_gases[/datum/gas/hypernoblium][MOLES] - heat_efficency * 0.01 < 0 ) || (cached_gases[/datum/gas/stimulum][MOLES] - heat_efficency * 0.5 < 0)) //Shouldn't produce gas from nothing.
+	if ((cached_gases[/datum/gas/hypernoblium][MOLES] - heat_efficency * 0.01 < 0 ) || (cached_gases[/datum/gas/nitrium][MOLES] - heat_efficency * 0.5 < 0)) //Shouldn't produce gas from nothing.
 		return NO_REACTION
 	cached_gases[/datum/gas/hypernoblium][MOLES] -= heat_efficency * 0.01
-	cached_gases[/datum/gas/stimulum][MOLES] -= heat_efficency * 0.5
+	cached_gases[/datum/gas/nitrium][MOLES] -= heat_efficency * 0.5
 	cached_gases[/datum/gas/zauker][MOLES] += heat_efficency * 0.5
 
 	if(energy_used)

code/modules/atmospherics/machinery/airalarm.dm

@@ -107,8 +107,7 @@
 		/datum/gas/hypernoblium = new/datum/tlv(-1, -1, 1000, 1000), // Hyper-Noblium is inert and nontoxic
 		/datum/gas/water_vapor = new/datum/tlv/dangerous,
 		/datum/gas/tritium = new/datum/tlv/dangerous,
-		/datum/gas/stimulum = new/datum/tlv/dangerous,
-		/datum/gas/nitryl = new/datum/tlv/dangerous,
+		/datum/gas/nitrium = new/datum/tlv/dangerous,
 		/datum/gas/pluoxium = new/datum/tlv(-1, -1, 1000, 1000), // Unlike oxygen, pluoxium does not fuel plasma/tritium fires
 		/datum/gas/freon = new/datum/tlv/dangerous,
 		/datum/gas/hydrogen = new/datum/tlv/dangerous,
@@ -454,10 +453,9 @@
 						/datum/gas/water_vapor,
 						/datum/gas/hypernoblium,
 						/datum/gas/nitrous_oxide,
-						/datum/gas/nitryl,
+						/datum/gas/nitrium,
 						/datum/gas/tritium,
 						/datum/gas/bz,
-						/datum/gas/stimulum,
 						/datum/gas/pluoxium,
 						/datum/gas/freon,
 						/datum/gas/hydrogen,
@@ -817,8 +815,7 @@
 		/datum/gas/hypernoblium = new/datum/tlv/no_checks,
 		/datum/gas/water_vapor = new/datum/tlv/no_checks,
 		/datum/gas/tritium = new/datum/tlv/no_checks,
-		/datum/gas/stimulum = new/datum/tlv/no_checks,
-		/datum/gas/nitryl = new/datum/tlv/no_checks,
+		/datum/gas/nitrium = new/datum/tlv/no_checks,
 		/datum/gas/pluoxium = new/datum/tlv/no_checks,
 		/datum/gas/freon = new/datum/tlv/no_checks,
 		/datum/gas/hydrogen = new/datum/tlv/no_checks,
@@ -844,8 +841,7 @@
 		/datum/gas/hypernoblium = new/datum/tlv(-1, -1, 1000, 1000), // Hyper-Noblium is inert and nontoxic
 		/datum/gas/water_vapor = new/datum/tlv/dangerous,
 		/datum/gas/tritium = new/datum/tlv/dangerous,
-		/datum/gas/stimulum = new/datum/tlv/dangerous,
-		/datum/gas/nitryl = new/datum/tlv/dangerous,
+		/datum/gas/nitrium = new/datum/tlv/dangerous,
 		/datum/gas/pluoxium = new/datum/tlv(-1, -1, 1000, 1000), // Unlike oxygen, pluoxium does not fuel plasma/tritium fires
 		/datum/gas/freon = new/datum/tlv/dangerous,
 		/datum/gas/hydrogen = new/datum/tlv/dangerous,

code/modules/atmospherics/machinery/components/fusion/hfr_fuel_datums.dm

@@ -136,5 +136,5 @@ GLOBAL_LIST_INIT(hfr_fuels_list, hfr_fuels_create_list())
 	temperature_change_multiplier = 1
 	requirements = list(/datum/gas/hypernoblium, /datum/gas/antinoblium)
 	primary_products = list(/datum/gas/helium)
-	secondary_products = list(/datum/gas/plasma, /datum/gas/oxygen, /datum/gas/nitrogen, /datum/gas/proto_nitrate, /datum/gas/stimulum, /datum/gas/miasma)
+	secondary_products = list(/datum/gas/plasma, /datum/gas/oxygen, /datum/gas/nitrogen, /datum/gas/proto_nitrate, /datum/gas/nitrium, /datum/gas/miasma)
 	meltdown_flags = HYPERTORUS_FLAG_DEVASTATING_EXPLOSION | HYPERTORUS_FLAG_RADIATION_PULSE | HYPERTORUS_FLAG_EMP | HYPERTORUS_FLAG_MASSIVE_SPREAD | HYPERTORUS_FLAG_CRITICAL_MELTDOWN

code/modules/atmospherics/machinery/components/fusion/hfr_main_processes.dm

@@ -129,13 +129,13 @@
 	// Gases that decrease the amount of energy
 	energy_modifiers -= scaled_moderator_list[/datum/gas/hypernoblium] * 10 + \
 								scaled_moderator_list[/datum/gas/water_vapor] * 0.75 + \
-								scaled_moderator_list[/datum/gas/nitryl] * 0.15 + \
+								scaled_moderator_list[/datum/gas/nitrium] * 0.15 + \
 								scaled_moderator_list[/datum/gas/healium] * 0.45 + \
 								scaled_moderator_list[/datum/gas/freon] * 1.15
 	///Between 0.25 and 100, this value is used to modify the behaviour of the internal energy and the core temperature based on the gases present in the mix
 	var/power_modifier = scaled_moderator_list[/datum/gas/oxygen] * 0.55 + \
 								scaled_moderator_list[/datum/gas/carbon_dioxide] * 0.95 + \
-								scaled_moderator_list[/datum/gas/nitryl] * 1.45 + \
+								scaled_moderator_list[/datum/gas/nitrium] * 1.45 + \
 								scaled_moderator_list[/datum/gas/zauker] * 5.55 + \
 								scaled_moderator_list[/datum/gas/plasma] * 0.05 - \
 								scaled_moderator_list[/datum/gas/nitrous_oxide] * 0.05 - \
@@ -301,21 +301,21 @@
 			if(moderator_list[/datum/gas/proto_nitrate] > 20)
 				radiation *= 1.55
 				heat_output *= 1.025
-				internal_output.assert_gases(/datum/gas/stimulum)
-				internal_output.gases[/datum/gas/stimulum][MOLES] += scaled_production * 1.05
+				internal_output.assert_gases(/datum/gas/nitrium)
+				internal_output.gases[/datum/gas/nitrium][MOLES] += scaled_production * 1.05
 				moderator_internal.gases[/datum/gas/proto_nitrate][MOLES] -= min(moderator_internal.gases[/datum/gas/proto_nitrate][MOLES], scaled_production * 1.35)
 		if(3, 4)
 			if(moderator_list[/datum/gas/plasma] > 10)
-				internal_output.assert_gases(/datum/gas/freon, /datum/gas/stimulum)
+				internal_output.assert_gases(/datum/gas/freon, /datum/gas/nitrium)
 				internal_output.gases[/datum/gas/freon][MOLES] += scaled_production * 0.15
-				internal_output.gases[/datum/gas/stimulum][MOLES] += scaled_production * 1.05
+				internal_output.gases[/datum/gas/nitrium][MOLES] += scaled_production * 1.05
 				moderator_internal.gases[/datum/gas/plasma][MOLES] -= min(moderator_internal.gases[/datum/gas/plasma][MOLES], scaled_production * 0.45)
 			if(moderator_list[/datum/gas/freon] > 50)
 				heat_output *= 0.9
 				radiation *= 0.8
 			if(moderator_list[/datum/gas/proto_nitrate]> 15)
-				internal_output.assert_gases(/datum/gas/stimulum, /datum/gas/halon)
-				internal_output.gases[/datum/gas/stimulum][MOLES] += scaled_production * 1.25
+				internal_output.assert_gases(/datum/gas/nitrium, /datum/gas/halon)
+				internal_output.gases[/datum/gas/nitrium][MOLES] += scaled_production * 1.25
 				internal_output.gases[/datum/gas/halon][MOLES] += scaled_production * 1.15
 				moderator_internal.gases[/datum/gas/proto_nitrate][MOLES] -= min(moderator_internal.gases[/datum/gas/proto_nitrate][MOLES], scaled_production * 1.55)
 				radiation *= 1.95
@@ -334,8 +334,8 @@
 				heat_output *= 0.5
 				radiation *= 0.2
 			if(moderator_list[/datum/gas/proto_nitrate] > 50)
-				internal_output.assert_gases(/datum/gas/stimulum, /datum/gas/pluoxium)
-				internal_output.gases[/datum/gas/stimulum][MOLES] += scaled_production * 1.95
+				internal_output.assert_gases(/datum/gas/nitrium, /datum/gas/pluoxium)
+				internal_output.gases[/datum/gas/nitrium][MOLES] += scaled_production * 1.95
 				internal_output.gases[/datum/gas/pluoxium][MOLES] += scaled_production
 				moderator_internal.gases[/datum/gas/proto_nitrate][MOLES] -= min(moderator_internal.gases[/datum/gas/proto_nitrate][MOLES], scaled_production * 1.35)
 				radiation *= 1.95
@@ -357,9 +357,9 @@
 				moderator_internal.gases[/datum/gas/bz][MOLES] += scaled_production * 1.15
 				moderator_internal.gases[/datum/gas/plasma][MOLES] -= min(moderator_internal.gases[/datum/gas/plasma][MOLES], scaled_production * 1.45)
 			if(moderator_list[/datum/gas/proto_nitrate])
-				internal_output.assert_gases(/datum/gas/zauker, /datum/gas/stimulum)
+				internal_output.assert_gases(/datum/gas/zauker, /datum/gas/nitrium)
 				internal_output.gases[/datum/gas/zauker][MOLES] += scaled_production * 5.35
-				internal_output.gases[/datum/gas/stimulum][MOLES] += scaled_production * 2.15
+				internal_output.gases[/datum/gas/nitrium][MOLES] += scaled_production * 2.15
 				moderator_internal.gases[/datum/gas/proto_nitrate][MOLES] -= min(moderator_internal.gases[/datum/gas/proto_nitrate][MOLES], scaled_production * 3.35)
 				radiation *= 2
 				heat_output *= 2.25

code/modules/atmospherics/machinery/components/gas_recipe_machines/atmos_machines_recipes.dm

@@ -180,7 +180,7 @@ GLOBAL_LIST_INIT(gas_recipe_meta, gas_recipes_list())
 	name = "exotic fuel pellet"
 	reaction_type = ENDOTHERMIC_REACTION
 	energy_release = 6000000
-	requirements = list(/datum/gas/hypernoblium = 100, /datum/gas/stimulum = 100)
+	requirements = list(/datum/gas/hypernoblium = 100, /datum/gas/nitrium = 100)
 	products = list(/obj/item/fuel_pellet/exotic = 1)
 
 /datum/gas_recipe/crystallizer/crystal_foam
@@ -190,3 +190,13 @@ GLOBAL_LIST_INIT(gas_recipe_meta, gas_recipes_list())
 	energy_release = 140000
 	requirements = list(/datum/gas/carbon_dioxide = 150, /datum/gas/nitrous_oxide = 100, /datum/gas/water_vapor = 25)
 	products = list(/obj/item/grenade/gas_crystal/crystal_foam = 1)
+
+/datum/gas_recipe/crystallizer/crystallized_nitrium
+	id = "crystallized_nitrium"
+	name = "Nitrium crystal"
+	min_temp = 10
+	max_temp = 25
+	reaction_type = ENDOTHERMIC_REACTION
+	energy_release = 45000
+	requirements = list(/datum/gas/nitrium = 150, /datum/gas/oxygen = 70, /datum/gas/bz = 50)
+	products = list(/obj/item/nitrium_crystal = 1)

code/modules/atmospherics/machinery/components/tank.dm

@@ -404,8 +404,8 @@
 /obj/machinery/atmospherics/components/tank/miasma
 	gas_type = /datum/gas/miasma
 
-/obj/machinery/atmospherics/components/tank/nitryl
-	gas_type = /datum/gas/nitryl
+/obj/machinery/atmospherics/components/tank/nitrium
+	gas_type = /datum/gas/nitrium
 
 /obj/machinery/atmospherics/components/tank/pluoxium
 	gas_type = /datum/gas/pluoxium
@@ -413,9 +413,6 @@
 /obj/machinery/atmospherics/components/tank/proto_nitrate
 	gas_type = /datum/gas/proto_nitrate
 
-/obj/machinery/atmospherics/components/tank/stimulum
-	gas_type = /datum/gas/stimulum
-
 /obj/machinery/atmospherics/components/tank/tritium
 	gas_type = /datum/gas/tritium
 

code/modules/atmospherics/machinery/components/trinary_devices/filter.dm

@@ -267,17 +267,14 @@
 	name = "miasma filter"
 	filter_type = list(/datum/gas/miasma)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/no2
-	name = "nitryl filter"
-	filter_type = list(/datum/gas/nitryl)
+	name = "nitrium filter"
+	filter_type = list(/datum/gas/nitrium)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/pluoxium
 	name = "pluoxium filter"
 	filter_type = list(/datum/gas/pluoxium)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/proto_nitrate
 	name = "proto-nitrate filter"
 	filter_type = list(/datum/gas/proto_nitrate)
-/obj/machinery/atmospherics/components/trinary/filter/atmos/stimulum
-	name = "stimulum filter"
-	filter_type = list(/datum/gas/stimulum)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/tritium
 	name = "tritium filter"
 	filter_type = list(/datum/gas/tritium)
@@ -336,17 +333,14 @@
 	name = "miasma filter"
 	filter_type = list(/datum/gas/miasma)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/flipped/no2
-	name = "nitryl filter"
-	filter_type = list(/datum/gas/nitryl)
+	name = "nitrium filter"
+	filter_type = list(/datum/gas/nitrium)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/flipped/pluoxium
 	name = "pluoxium filter"
 	filter_type = list(/datum/gas/pluoxium)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/flipped/proto_nitrate
 	name = "proto-nitrate filter"
 	filter_type = list(/datum/gas/proto_nitrate)
-/obj/machinery/atmospherics/components/trinary/filter/atmos/flipped/stimulum
-	name = "stimulum filter"
-	filter_type = list(/datum/gas/stimulum)
 /obj/machinery/atmospherics/components/trinary/filter/atmos/flipped/tritium
 	name = "tritium filter"
 	filter_type = list(/datum/gas/tritium)

code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm

@@ -263,18 +263,15 @@
 /obj/machinery/atmospherics/components/unary/outlet_injector/atmos/miasma_input
 	name = "miasma tank input injector"
 	id = ATMOS_GAS_MONITOR_INPUT_MIASMA
-/obj/machinery/atmospherics/components/unary/outlet_injector/atmos/nitryl_input
-	name = "nitryl tank input injector"
-	id = ATMOS_GAS_MONITOR_INPUT_NO2
+/obj/machinery/atmospherics/components/unary/outlet_injector/atmos/nitrium_input
+	name = "nitrium tank input injector"
+	id = ATMOS_GAS_MONITOR_INPUT_NITRIUM
 /obj/machinery/atmospherics/components/unary/outlet_injector/atmos/pluoxium_input
 	name = "pluoxium tank input injector"
 	id = ATMOS_GAS_MONITOR_INPUT_PLUOXIUM
 /obj/machinery/atmospherics/components/unary/outlet_injector/atmos/proto_nitrate_input
 	name = "proto-nitrate tank input injector"
 	id = ATMOS_GAS_MONITOR_INPUT_PROTO_NITRATE
-/obj/machinery/atmospherics/components/unary/outlet_injector/atmos/stimulum_input
-	name = "stimulum tank input injector"
-	id = ATMOS_GAS_MONITOR_INPUT_STIMULUM
 /obj/machinery/atmospherics/components/unary/outlet_injector/atmos/tritium_input
 	name = "tritium tank input injector"
 	id = ATMOS_GAS_MONITOR_INPUT_TRITIUM

code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm

@@ -411,18 +411,15 @@
 /obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/miasma_output
 	name = "miasma tank output inlet"
 	id_tag = ATMOS_GAS_MONITOR_OUTPUT_MIASMA
-/obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/nitryl_output
-	name = "nitryl tank output inlet"
-	id_tag = ATMOS_GAS_MONITOR_OUTPUT_NO2
+/obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/nitrium_output
+	name = "nitrium tank output inlet"
+	id_tag = ATMOS_GAS_MONITOR_OUTPUT_NITRIUM
 /obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/pluoxium_output
 	name = "pluoxium tank output inlet"
 	id_tag = ATMOS_GAS_MONITOR_OUTPUT_PLUOXIUM
 /obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/proto_nitrate_output
 	name = "proto-nitrate tank output inlet"
 	id_tag = ATMOS_GAS_MONITOR_OUTPUT_PROTO_NITRATE
-/obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/stimulum_output
-	name = "stimulum tank output inlet"
-	id_tag = ATMOS_GAS_MONITOR_OUTPUT_STIMULUM
 /obj/machinery/atmospherics/components/unary/vent_pump/siphon/atmos/tritium_output
 	name = "tritium tank output inlet"
 	id_tag = ATMOS_GAS_MONITOR_OUTPUT_TRITIUM

code/modules/atmospherics/machinery/other/miner.dm

@@ -209,10 +209,10 @@
 	overlay_color = "#395806"
 	spawn_id = /datum/gas/miasma
 
-/obj/machinery/atmospherics/miner/nitryl
-	name = "\improper Nitryl Gas Miner"
+/obj/machinery/atmospherics/miner/nitrium
+	name = "\improper Nitrium Gas Miner"
 	overlay_color = "#752b00"
-	spawn_id = /datum/gas/nitryl
+	spawn_id = /datum/gas/nitrium
 
 /obj/machinery/atmospherics/miner/pluoxium
 	name = "\improper Pluoxium Gas Miner"
@@ -224,11 +224,6 @@
 	overlay_color = "#00571d"
 	spawn_id = /datum/gas/proto_nitrate
 
-/obj/machinery/atmospherics/miner/stimulum
-	name = "\improper Stimulum Gas Miner"
-	overlay_color = "#d577dd"
-	spawn_id = /datum/gas/stimulum
-
 /obj/machinery/atmospherics/miner/tritium
 	name = "\improper Tritium Gas Miner"
 	overlay_color = "#15ff00"

code/modules/atmospherics/machinery/portable/canister.dm

@@ -15,13 +15,12 @@ GLOBAL_LIST_INIT(gas_id_to_canister, init_gas_id_to_canister())
 		"co2" = /obj/machinery/portable_atmospherics/canister/carbon_dioxide,
 		"plasma" = /obj/machinery/portable_atmospherics/canister/plasma,
 		"n2o" = /obj/machinery/portable_atmospherics/canister/nitrous_oxide,
-		"no2" = /obj/machinery/portable_atmospherics/canister/nitryl,
+		"nitrium" = /obj/machinery/portable_atmospherics/canister/nitrium,
 		"bz" = /obj/machinery/portable_atmospherics/canister/bz,
 		"air" = /obj/machinery/portable_atmospherics/canister/air,
 		"water_vapor" = /obj/machinery/portable_atmospherics/canister/water_vapor,
 		"tritium" = /obj/machinery/portable_atmospherics/canister/tritium,
 		"hyper-noblium" = /obj/machinery/portable_atmospherics/canister/nob,
-		"stimulum" = /obj/machinery/portable_atmospherics/canister/stimulum,
 		"pluoxium" = /obj/machinery/portable_atmospherics/canister/pluoxium,
 		"caution" = /obj/machinery/portable_atmospherics/canister,
 		"miasma" = /obj/machinery/portable_atmospherics/canister/miasma,
@@ -216,10 +215,10 @@ GLOBAL_LIST_INIT(gas_id_to_canister, init_gas_id_to_canister())
 	greyscale_config = /datum/greyscale_config/canister/double_stripe
 	greyscale_colors = "#c63e3b#f7d5d3"
 
-/obj/machinery/portable_atmospherics/canister/nitryl
-	name = "Nitryl canister"
-	desc = "Nitryl gas. Feels great 'til the acid eats your lungs."
-	gas_type = /datum/gas/nitryl
+/obj/machinery/portable_atmospherics/canister/nitrium
+	name = "Nitrium canister"
+	desc = "Nitrium gas. Feels great 'til the acid eats your lungs."
+	gas_type = /datum/gas/nitrium
 	greyscale_config = /datum/greyscale_config/canister
 	greyscale_colors = "#7b4732"
 
@@ -252,13 +251,6 @@ GLOBAL_LIST_INIT(gas_id_to_canister, init_gas_id_to_canister())
 	greyscale_config = /datum/greyscale_config/canister/double_stripe
 	greyscale_colors = "#008200#33cc33"
 
-/obj/machinery/portable_atmospherics/canister/stimulum
-	name = "Stimulum canister"
-	desc = "Stimulum. High energy gas, high energy people."
-	gas_type = /datum/gas/stimulum
-	greyscale_config = /datum/greyscale_config/canister
-	greyscale_colors = "#9b5d7f"
-
 /obj/machinery/portable_atmospherics/canister/plasma
 	name = "Plasma canister"
 	desc = "Plasma gas. The reason YOU are here. Highly toxic."

code/modules/atmospherics/machinery/portable/scrubber.dm

@@ -23,7 +23,7 @@
 		/datum/gas/carbon_dioxide,
 		/datum/gas/nitrous_oxide,
 		/datum/gas/bz,
-		/datum/gas/nitryl,
+		/datum/gas/nitrium,
 		/datum/gas/tritium,
 		/datum/gas/hypernoblium,
 		/datum/gas/water_vapor,

code/modules/cargo/bounties/engineering.dm

@@ -15,10 +15,10 @@
 		return FALSE
 	return our_mix.gases[gas_type][MOLES] >= moles_required
 
-/datum/bounty/item/engineering/gas/nitryl_tank
-	name = "Full Tank of Nitryl"
-	description = "The non-human staff of Station 88 has been volunteered to test performance enhancing drugs. Ship them a tank full of Nitryl so they can get started. (20 Moles)"
-	gas_type = /datum/gas/nitryl
+/datum/bounty/item/engineering/gas/nitrium_tank
+	name = "Full Tank of Nitrium"
+	description = "The non-human staff of Station 88 has been volunteered to test performance enhancing drugs. Ship them a tank full of Nitrium so they can get started. (20 Moles)"
+	gas_type = /datum/gas/nitrium
 
 /datum/bounty/item/engineering/gas/freon_tank
 	name = "Full Tank of Freon"

code/modules/cargo/exports/large_objects.dm

@@ -109,7 +109,7 @@
 	var/canister_gas = canister_mix.gases
 	var/list/gases_to_check = list(
 								/datum/gas/bz,
-								/datum/gas/stimulum,
+								/datum/gas/nitrium,
 								/datum/gas/hypernoblium,
 								/datum/gas/miasma,
 								/datum/gas/tritium,

code/modules/clothing/masks/gas_filter.dm

@@ -35,8 +35,7 @@
 		)
 	///List of gases with medium filter priority
 	var/list/mid_filtering_gases = list(
-		/datum/gas/nitryl,
-		/datum/gas/stimulum,
+		/datum/gas/nitrium,
 		/datum/gas/freon,
 		/datum/gas/hypernoblium,
 		/datum/gas/bz

code/modules/mob/living/carbon/life.dm

@@ -246,10 +246,13 @@
 		else if(bz_partialpressure > 0.01)
 			hallucination += 5
 
-	//NITRYL
-	if(breath_gases[/datum/gas/nitryl])
-		var/nitryl_partialpressure = (breath_gases[/datum/gas/nitryl][MOLES]/breath.total_moles())*breath_pressure
-		adjustFireLoss(nitryl_partialpressure/4)
+	//NITRIUM
+	if(breath_gases[/datum/gas/nitrium])
+		var/nitrium_partialpressure = (breath_gases[/datum/gas/nitrium][MOLES]/breath.total_moles())*breath_pressure
+		if(nitrium_partialpressure > 0.5)
+			adjustFireLoss(nitrium_partialpressure * 0.15)
+		if(nitrium_partialpressure > 5)
+			adjustToxLoss(nitrium_partialpressure * 0.05)
 
 	//FREON
 	if(breath_gases[/datum/gas/freon])

code/modules/movespeed/modifiers/reagent.dm

@@ -19,7 +19,7 @@
 /datum/movespeed_modifier/reagent/methamphetamine
 	multiplicative_slowdown = -0.65
 
-/datum/movespeed_modifier/reagent/nitryl
+/datum/movespeed_modifier/reagent/nitrium
 	multiplicative_slowdown = -0.65
 
 /datum/movespeed_modifier/reagent/cannabis

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -1388,55 +1388,55 @@
 		M.set_confusion(min(M.get_confusion() + 2, 5))
 	..()
 
-/datum/reagent/stimulum
-	name = "Stimulum"
-	description = "An unstable experimental gas that greatly increases the energy of those that inhale it, while dealing increasing toxin damage over time."
+/datum/reagent/nitrium_high_metabolization
+	name = "Nitrosyl plasmide"
+	description = "A highly reactive byproduct that stops you from sleeping, while dealing increasing toxin damage over time."
 	reagent_state = GAS
-	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because stimulum/nitryl/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
+	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because nitrium/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
 	color = "E1A116"
 	taste_description = "sourness"
 	ph = 1.8
 	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED|REAGENT_NO_RANDOM_RECIPE
 	addiction_types = list(/datum/addiction/stimulants = 14)
 
-/datum/reagent/stimulum/on_mob_metabolize(mob/living/L)
-	..()
+/datum/reagent/nitrium_high_metabolization/on_mob_metabolize(mob/living/L)
+	. = ..()
 	ADD_TRAIT(L, TRAIT_STUNIMMUNE, type)
 	ADD_TRAIT(L, TRAIT_SLEEPIMMUNE, type)
 
-/datum/reagent/stimulum/on_mob_end_metabolize(mob/living/L)
+/datum/reagent/nitrium_high_metabolization/on_mob_end_metabolize(mob/living/L)
 	REMOVE_TRAIT(L, TRAIT_STUNIMMUNE, type)
 	REMOVE_TRAIT(L, TRAIT_SLEEPIMMUNE, type)
-	..()
+	return ..()
 
-/datum/reagent/stimulum/on_mob_life(mob/living/carbon/M, delta_time, times_fired)
+/datum/reagent/nitrium_high_metabolization/on_mob_life(mob/living/carbon/M, delta_time, times_fired)
 	M.adjustStaminaLoss(-2 * REM * delta_time, 0)
 	M.adjustToxLoss(0.1 * current_cycle * REM * delta_time, 0) // 1 toxin damage per cycle at cycle 10
-	..()
+	return ..()
 
-/datum/reagent/nitryl
-	name = "Nitryl"
+/datum/reagent/nitrium_low_metabolization
+	name = "Nitrium"
 	description = "A highly reactive gas that makes you feel faster."
 	reagent_state = GAS
-	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because stimulum/nitryl/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
+	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because nitrium/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
 	color = "90560B"
 	taste_description = "burning"
 	ph = 2
 	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED|REAGENT_NO_RANDOM_RECIPE
 
-/datum/reagent/nitryl/on_mob_metabolize(mob/living/L)
-	..()
-	L.add_movespeed_modifier(/datum/movespeed_modifier/reagent/nitryl)
+/datum/reagent/nitrium_low_metabolization/on_mob_metabolize(mob/living/L)
+	. = ..()
+	L.add_movespeed_modifier(/datum/movespeed_modifier/reagent/nitrium)
 
-/datum/reagent/nitryl/on_mob_end_metabolize(mob/living/L)
-	L.remove_movespeed_modifier(/datum/movespeed_modifier/reagent/nitryl)
-	..()
+/datum/reagent/nitrium_low_metabolization/on_mob_end_metabolize(mob/living/L)
+	L.remove_movespeed_modifier(/datum/movespeed_modifier/reagent/nitrium)
+	return ..()
 
 /datum/reagent/freon
 	name = "Freon"
 	description = "A powerful heat absorbent."
 	reagent_state = GAS
-	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because stimulum/nitryl/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
+	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because nitrium/freon/hypernoblium are handled through gas breathing, metabolism must be lower for breathcode to keep up
 	color = "90560B"
 	taste_description = "burning"
 	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED|REAGENT_NO_RANDOM_RECIPE
@@ -1453,7 +1453,7 @@
 	name = "Hyper-Noblium"
 	description = "A suppressive gas that stops gas reactions on those who inhale it."
 	reagent_state = GAS
-	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because stimulum/nitryl/freon/hyper-nob are handled through gas breathing, metabolism must be lower for breathcode to keep up
+	metabolization_rate = REAGENTS_METABOLISM * 0.5 // Because nitrium/freon/hyper-nob are handled through gas breathing, metabolism must be lower for breathcode to keep up
 	color = "90560B"
 	taste_description = "searingly cold"
 	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED|REAGENT_NO_RANDOM_RECIPE

code/modules/surgery/organs/lungs.dm

@@ -36,7 +36,7 @@
 	var/SA_sleep_min = 5 //Sleeping agent
 	var/BZ_trip_balls_min = 1 //BZ gas
 	var/BZ_brain_damage_min = 10 //Give people some room to play around without killing the station
-	var/gas_stimulation_min = 0.002 //Nitryl, Stimulum and Freon
+	var/gas_stimulation_min = 0.002 //nitrium and Freon
 	///Minimum amount of healium to make you unconscious for 4 seconds
 	var/healium_para_min = 3
 	///Minimum amount of healium to knock you down for good
@@ -303,18 +303,20 @@
 
 		breath_gases[/datum/gas/tritium][MOLES] -= gas_breathed
 
-	// Nitryl
-		var/nitryl_pp = breath.get_breath_partial_pressure(breath_gases[/datum/gas/nitryl][MOLES])
-		if (prob(nitryl_pp))
-			breather.emote("burp")
-		if (prob(nitryl_pp) && nitryl_pp>10)
-			breather.adjustOrganLoss(ORGAN_SLOT_LUNGS, nitryl_pp/2)
-			to_chat(breather, span_notice("You feel a burning sensation in your chest"))
-		gas_breathed = breath_gases[/datum/gas/nitryl][MOLES]
-		if (gas_breathed > gas_stimulation_min)
-			breather.reagents.add_reagent(/datum/reagent/nitryl,1)
+	// Nitrium
+		var/nitrium_pp = breath.get_breath_partial_pressure(breath_gases[/datum/gas/nitrium][MOLES])
+		if (prob(nitrium_pp) && nitrium_pp > 15)
+			breather.adjustOrganLoss(ORGAN_SLOT_LUNGS, nitrium_pp * 0.1)
+			to_chat(breather, "<span class='notice'>You feel a burning sensation in your chest</span>")
+		gas_breathed = breath_gases[/datum/gas/nitrium][MOLES]
+		if (nitrium_pp > 5)
+			var/existing = breather.reagents.get_reagent_amount(/datum/reagent/nitrium_low_metabolization)
+			breather.reagents.add_reagent(/datum/reagent/nitrium_low_metabolization, max(0, 2 - existing))
+		if (nitrium_pp > 10)
+			var/existing = breather.reagents.get_reagent_amount(/datum/reagent/nitrium_high_metabolization)
+			breather.reagents.add_reagent(/datum/reagent/nitrium_high_metabolization, max(0, 1 - existing))
 
-		breath_gases[/datum/gas/nitryl][MOLES]-=gas_breathed
+		breath_gases[/datum/gas/nitrium][MOLES] -= gas_breathed
 
 	// Freon
 		var/freon_pp = breath.get_breath_partial_pressure(breath_gases[/datum/gas/freon][MOLES])
@@ -373,13 +375,6 @@
 		gas_breathed = breath_gases[/datum/gas/halon][MOLES]
 		breath_gases[/datum/gas/halon][MOLES]-=gas_breathed
 
-	// Stimulum
-		gas_breathed = breath_gases[/datum/gas/stimulum][MOLES]
-		if (gas_breathed > gas_stimulation_min)
-			var/existing = breather.reagents.get_reagent_amount(/datum/reagent/stimulum)
-			breather.reagents.add_reagent(/datum/reagent/stimulum,max(0, 1 - existing))
-		breath_gases[/datum/gas/stimulum][MOLES]-=gas_breathed
-
 	// Hyper-Nob
 		gas_breathed = breath_gases[/datum/gas/hypernoblium][MOLES]
 		if (gas_breathed > gas_stimulation_min)