diff --git a/code/datums/disease.dm b/code/datums/disease.dm
index 83dfbd7e95f..9a56e665cad 100644
--- a/code/datums/disease.dm
+++ b/code/datums/disease.dm
@@ -43,6 +43,7 @@ to null does not delete the object itself. Thank you.
 	var/severity = null//severity descr
 	var/longevity = 250//time in "ticks" the virus stays in inanimate object (blood stains, corpses, etc). In syringes, bottles and beakers it stays infinitely.
 	var/list/hidden = list(0, 0)
+	var/can_carry = 1 // If the disease allows "carriers".
 	// if hidden[1] is true, then virus is hidden from medical scanners
 	// if hidden[2] is true, then virus is hidden from PANDEMIC machine
 
diff --git a/code/datums/diseases/alien_embryo.dm b/code/datums/diseases/alien_embryo.dm
index 7928610439c..0e9f41e8b50 100644
--- a/code/datums/diseases/alien_embryo.dm
+++ b/code/datums/diseases/alien_embryo.dm
@@ -37,7 +37,8 @@
 	cure_id = list("lexorin","toxin","gargleblaster")
 	cure_chance = 20
 	affected_species = list("Human", "Monkey")
-	permeability_mod = 3//likely to infect
+	permeability_mod = 15//likely to infect
+	can_carry = 0
 	var/gibbed = 0
 
 /datum/disease/alien_embryo/stage_act()
@@ -79,14 +80,17 @@
 			affected_mob << "\red You feel something tearing its way out of your stomach..."
 			affected_mob.adjustToxLoss(10)
 			affected_mob.updatehealth()
-			if(prob(40))
+			if(prob(50))
 				if(gibbed != 0) return 0
 				var/list/candidates = list() //List of candidate KEYS to assume control of the new larva ~Carn
-				for(var/mob/dead/observer/G in player_list)
-					if(G.client.be_alien)
-						if(((G.client.inactivity/10)/60) <= 5)
-							if(!(G.mind && G.mind.current && G.mind.current.stat != DEAD))
-								candidates += G.key
+				var/i = 0
+				while(candidates.len <= 0 && i < 5)
+					for(var/mob/dead/observer/G in player_list)
+						if(G.client.be_alien)
+							if(((G.client.inactivity/10)/60) <= ALIEN_SELECT_AFK_BUFFER + i) // the most active players are more likely to become an alien
+								if(!(G.mind && G.mind.current && G.mind.current.stat != DEAD))
+									candidates += G.key
+					i++
 
 				var/mob/living/carbon/alien/larva/new_xeno = new(affected_mob.loc)
 				if(candidates.len)
diff --git a/code/defines/obj.dm b/code/defines/obj.dm
index 668f80f7dd2..64db183929e 100644
--- a/code/defines/obj.dm
+++ b/code/defines/obj.dm
@@ -138,44 +138,6 @@
 	anchored = 1
 	unacidable = 1//temporary until I decide whether the borg can be removed. -veyveyr
 
-
-// Basically this Metroid Core catalyzes reactions that normally wouldn't happen anywhere
-/obj/item/metroid_core
-	name = "roro core"
-	desc = "A very slimy and tender part of a Rorobeast. Legends claim these to have \"magical powers\"."
-	icon = 'icons/obj/surgery.dmi'
-	icon_state = "roro core"
-	flags = TABLEPASS
-	force = 1.0
-	w_class = 1.0
-	throwforce = 1.0
-	throw_speed = 3
-	throw_range = 6
-	origin_tech = "biotech=4"
-	var/POWERFLAG = 0 // sshhhhhhh
-	var/Flush = 30
-	var/Uses = 5 // uses before it goes inert
-
-	New()
-		..()
-		var/datum/reagents/R = new/datum/reagents(100)
-		reagents = R
-		R.my_atom = src
-		POWERFLAG = rand(1,10)
-		Uses = rand(7, 25)
-		//flags |= NOREACT
-
-		spawn()
-			Life()
-
-	proc/Life()
-		while(src)
-			sleep(25)
-			Flush--
-			if(Flush <= 0)
-				reagents.clear_reagents()
-				Flush = 30
-
 /obj/effect/deskclutter
 	name = "desk clutter"
 	icon = 'icons/obj/items.dmi'
diff --git a/code/game/gamemodes/events.dm b/code/game/gamemodes/events.dm
index b9346b6dcc5..43baff66d91 100644
--- a/code/game/gamemodes/events.dm
+++ b/code/game/gamemodes/events.dm
@@ -270,11 +270,14 @@
 				vents += temp_vent
 
 	var/list/candidates = list() //List of candidate KEYs to control the new larvae. ~Carn
-	for(var/mob/dead/observer/G in player_list)
-		if(G.client.be_alien)
-			if(((G.client.inactivity/10)/60) <= 5)
-				if(!(G.mind && G.mind.current && G.mind.current != DEAD))
-					candidates += G.key
+	var/i = 0
+	while(candidates.len <= 0 && i < 5)
+		for(var/mob/dead/observer/G in player_list)
+			if(G.client.be_alien)
+				if(((G.client.inactivity/10)/60) <= ALIEN_SELECT_AFK_BUFFER + i) // the most active players are more likely to become an alien
+					if(!(G.mind && G.mind.current && G.mind.current.stat != DEAD))
+						candidates += G.key
+		i++
 
 	if(prob(33)) spawncount++ //sometimes, have two larvae spawn instead of one
 	while((spawncount >= 1) && vents.len && candidates.len)
diff --git a/code/game/gamemodes/nuclear/nuclearbomb.dm b/code/game/gamemodes/nuclear/nuclearbomb.dm
index 40e81b18b8d..fd423f382f8 100644
--- a/code/game/gamemodes/nuclear/nuclearbomb.dm
+++ b/code/game/gamemodes/nuclear/nuclearbomb.dm
@@ -31,6 +31,16 @@
 				src.attack_hand(M)
 	return
 
+/obj/machinery/nuclearbomb/attackby(obj/item/weapon/I as obj, mob/user as mob)
+	if (src.extended)
+		if (istype(I, /obj/item/weapon/disk/nuclear))
+			usr.drop_item()
+			I.loc = src
+			src.auth = I
+			src.add_fingerprint(user)
+			return
+	..()
+
 /obj/machinery/nuclearbomb/attack_paw(mob/user as mob)
 	return src.attack_hand(user)
 
diff --git a/code/modules/mob/living/carbon/metroid/life.dm b/code/modules/mob/living/carbon/metroid/life.dm
index c9297618a69..270e8659d45 100644
--- a/code/modules/mob/living/carbon/metroid/life.dm
+++ b/code/modules/mob/living/carbon/metroid/life.dm
@@ -329,27 +329,22 @@
 					if(nutrition >= 800)
 						if(prob(40)) amount_grown++
 
+			//lay eggs or grow
 			if(amount_grown >= 10 && !Victim && !Target)
 				if(istype(src, /mob/living/carbon/metroid/adult))
-					if(!client)
-						var/number = pick(2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,4)
-						for(var/i=1,i<=number,i++) // reproduce (has a small chance of producing 3 or 4 offspring)
-							var/mob/living/carbon/metroid/M = new/mob/living/carbon/metroid(loc)
-//							M.nutrition = round(nutrition * 0.9)
-							M.powerlevel = round(powerlevel/number)
-							M.Friends = Friends
-							M.tame = tame
-							M.rabid = rabid
-							M.Discipline = Discipline
-							if(i != 1) step_away(M,src)
-
-						del(src)
+					if(!client && nutrition >= 1000)
+						var/number = pick(1,1,1,1,1,1,2,2,2,3) //number of eggs laid
+						var/obj/item/weapon/reagent_containers/food/snacks/roro_egg/E
+						for(var/i=1,i<=number,i++)
+							E = new/obj/item/weapon/reagent_containers/food/snacks/roro_egg(loc)
+							src.nutrition -= 200
+						step_away(E,src)
 
 				else
 					if(!client)
 						var/mob/living/carbon/metroid/adult/A = new/mob/living/carbon/metroid/adult(src.loc)
 						A.nutrition = nutrition
-//						A.nutrition += 100
+						A.nutrition += 100
 						A.powerlevel = max(0, powerlevel-1)
 						A.Friends = Friends
 						A.tame = tame
diff --git a/code/modules/mob/living/carbon/metroid/metroid.dm b/code/modules/mob/living/carbon/metroid/metroid.dm
index acf65197f5b..e35c30004b6 100644
--- a/code/modules/mob/living/carbon/metroid/metroid.dm
+++ b/code/modules/mob/living/carbon/metroid/metroid.dm
@@ -770,4 +770,81 @@ mob/living/carbon/metroid/var/temperature_resistance = T0C+75
 
 		return 0
 
-	return 1
\ No newline at end of file
+	return 1
+
+
+// Basically this Metroid Core catalyzes reactions that normally wouldn't happen anywhere
+/obj/item/metroid_core
+	name = "roro core"
+	desc = "A very slimy and tender part of a Rorobeast. Legends claim these to have \"magical powers\"."
+	icon = 'icons/obj/surgery.dmi'
+	icon_state = "roro core"
+	flags = TABLEPASS
+	force = 1.0
+	w_class = 1.0
+	throwforce = 1.0
+	throw_speed = 3
+	throw_range = 6
+	origin_tech = "biotech=4"
+	var/POWERFLAG = 0 // sshhhhhhh
+	var/Flush = 30
+	var/Uses = 5 // uses before it goes inert
+
+	New()
+		..()
+		var/datum/reagents/R = new/datum/reagents(100)
+		reagents = R
+		R.my_atom = src
+		POWERFLAG = rand(1,10)
+		Uses = rand(7, 25)
+		//flags |= NOREACT
+
+		spawn()
+			Life()
+
+	proc/Life()
+		while(src)
+			sleep(25)
+			Flush--
+			if(Flush <= 0)
+				reagents.clear_reagents()
+				Flush = 30
+
+/obj/item/weapon/reagent_containers/food/snacks/roro_egg
+	name = "roro egg"
+	desc = "A small, gelatinous egg."
+	icon = 'icons/mob/mob.dmi'
+	icon_state = "roro egg-growing"
+	bitesize = 12
+	origin_tech = "biotech=4"
+	var/grown = 0
+
+	New()
+		..()
+		reagents.add_reagent("nutriment", 5)
+		spawn(rand(1200,1500))//the egg takes a while to "ripen"
+			Grow()
+
+	proc/Grow()
+		grown = 1
+		icon_state = "roro egg-grown"
+		processing_objects.Add(src)
+		return
+
+	proc/Hatch()
+		processing_objects.Remove(src)
+		var/turf/T = get_turf(src)
+		for(var/mob/O in hearers(T))
+			O.show_message("\blue The [name] pulsates and quivers!")
+		spawn(rand(50,100))
+			for(var/mob/O in hearers(T))
+				O.show_message("\blue The [name] bursts open!")
+			new/mob/living/carbon/metroid(T)
+			del(src)
+
+
+/obj/item/weapon/reagent_containers/food/snacks/roro_egg/process()
+	var/turf/location = get_turf(src)
+	var/datum/gas_mixture/environment = location.return_air()
+	if (environment.toxins > MOLES_PLASMA_VISIBLE)//plasma exposure causes the egg to hatch
+		src.Hatch()
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/metroid/powers.dm b/code/modules/mob/living/carbon/metroid/powers.dm
index 0f4bde9c004..0206e931194 100644
--- a/code/modules/mob/living/carbon/metroid/powers.dm
+++ b/code/modules/mob/living/carbon/metroid/powers.dm
@@ -187,7 +187,7 @@
 
 /mob/living/carbon/metroid/verb/Reproduce()
 	set category = "Roro"
-	set desc = "This will make you split into a random number of Metroids (usually 2). NOTE: this will KILL you, but you will be transferred into one of the babies."
+	set desc = "This will make you lay an egg. NOTE: This decreases your nutrition."
 
 	if(stat)
 		src << "<i>I must be conscious to do this...</i>"
@@ -195,32 +195,15 @@
 
 	if(istype(src, /mob/living/carbon/metroid/adult))
 		if(amount_grown >= 10)
-			if(input("Are you absolutely sure you want to reproduce? Your current body will cease to be, but your consciousness will be transferred into a produced rorobeast.") in list("Yes","No")=="Yes")
-				if(stat)
-					src << "<i>I must be conscious to do this...</i>"
-					return
-
-				var/list/babies = list()
-				var/number = pick(14;2,3,4)
-				var/new_nutrition = round(nutrition * 0.9)
-				var/new_powerlevel = round(powerlevel / number)
-				for(var/i=1,i<=number,i++) // reproduce (has a small chance of producing 3 or 4 offspring)
-					var/mob/living/carbon/metroid/M = new/mob/living/carbon/metroid(loc)
-					M.nutrition = new_nutrition
-					M.powerlevel = new_powerlevel
-					if(i != 1) step_away(M,src)
-					babies += M
-
-				var/mob/living/carbon/metroid/new_metroid = pick(babies)
-				new_metroid.a_intent = "hurt"
-				new_metroid.key = key
-
-				new_metroid << "<B>You are now a Rorobeast. Skree!</B>"
-				del(src)
+			if(src.nutrition >= 300)
+				new/obj/item/weapon/reagent_containers/food/snacks/roro_egg(loc)
+				src.nutrition -= 200
+			else
+				src << "<i>I have not fed enough...</i>"
 		else
 			src << "<i>I am not ready to reproduce yet...</i>"
 	else
-		src << "<i>I am not old enough to reproduce yet...</i>"
+		src << "<i>I am not old enough to lay eggs yet...</i>"
 
 
 
diff --git a/code/modules/mob/mob_cleanup.dm b/code/modules/mob/mob_cleanup.dm
index 0cd97f65676..b52c61043f5 100644
--- a/code/modules/mob/mob_cleanup.dm
+++ b/code/modules/mob/mob_cleanup.dm
@@ -42,7 +42,7 @@ Put (mob/proc)s here that are in dire need of a code cleanup.
 		v.affected_mob = src
 		v.strain_data = v.strain_data.Copy()
 		v.holder = src
-		if(prob(5))
+		if(v.can_carry && prob(5))
 			v.carrier = 1
 		return
 
@@ -194,7 +194,7 @@ Put (mob/proc)s here that are in dire need of a code cleanup.
 		v.affected_mob = src
 		v.strain_data = v.strain_data.Copy()
 		v.holder = src
-		if(prob(5))
+		if(v.can_carry && prob(5))
 			v.carrier = 1
 		return
 	return
diff --git a/code/modules/reagents/Chemistry-Reagents.dm b/code/modules/reagents/Chemistry-Reagents.dm
index 47e7e91c253..4615e57e6f3 100644
--- a/code/modules/reagents/Chemistry-Reagents.dm
+++ b/code/modules/reagents/Chemistry-Reagents.dm
@@ -1119,8 +1119,12 @@ datum
 				..()
 				return
 			reaction_obj(var/obj/O, var/volume)
-				if((!O) || (!volume))	return 0
 				src = null
+				if(istype(O,/obj/item/weapon/reagent_containers/food/snacks/roro_egg))
+					var/obj/item/weapon/reagent_containers/food/snacks/roro_egg/egg = O
+					if (egg.grown)
+						egg.Hatch()
+				if((!O) || (!volume))	return 0
 				var/turf/the_turf = get_turf(O)
 				var/datum/gas_mixture/napalm = new
 				var/datum/gas/volatile_fuel/fuel = new
diff --git a/code/setup.dm b/code/setup.dm
index eabb476fa11..edeed307076 100644
--- a/code/setup.dm
+++ b/code/setup.dm
@@ -127,6 +127,8 @@ var/MAX_EXPLOSION_RANGE = 14
 
 #define HUMAN_STRIP_DELAY 40 //takes 40ds = 4s to strip someone.
 
+#define ALIEN_SELECT_AFK_BUFFER 2 // How many minutes that a person can be AFK before not being allowed to be an alien.
+
 #define NORMPIPERATE 30					//pipe-insulation rate divisor
 #define HEATPIPERATE 8					//heat-exch pipe insulation
 
diff --git a/html/changelog.html b/html/changelog.html
index 8e79b6567ce..93c5dacab40 100644
--- a/html/changelog.html
+++ b/html/changelog.html
@@ -58,6 +58,7 @@ should be listed in the changelog upon commit tho. Thanks. -->
 		<li class="rscadd">Extract DNA! A power that allows you to silently sting someone and take their DNA! Meaning you do not have to absorb someone to become them. Extracting their DNA doesn't count towards completing your objectives.</li>
 		<li class="rscadd">You can now get flares from red emergency toolboxes. Has a 50% chance of a flash-light or a flare spawning.</li>
 		<li class="imageadd">Flare icon by Ausops!</li>
+		<li class="rscadd">Thanks to RavingManiac (Smoke Carter), Roros now lay eggs which can grow into baby roros or be used for cooking recipes. Scientists will need to expose the egg to plasma for it to hatch; while it is orange (grown).</li>
 	</ul>
 </div>
 
diff --git a/icons/mob/mob.dmi b/icons/mob/mob.dmi
index a1d4ef776fb..7701f6835f9 100644
Binary files a/icons/mob/mob.dmi and b/icons/mob/mob.dmi differ