diff --git a/code/__HELPERS/unsorted.dm b/code/__HELPERS/unsorted.dm
index 892dd3f8107..614cee7d234 100644
--- a/code/__HELPERS/unsorted.dm
+++ b/code/__HELPERS/unsorted.dm
@@ -1899,3 +1899,27 @@ var/mob/dview/dview_mob = new
 		num_sample -= num
 		result += (1 << num)
 	return result
+
+/proc/pixel_shift_dir(var/dir, var/amount_x = 32, var/amount_y = 32) //Returns a list with pixel_shift values that will shift an object's icon one tile in the direction passed.
+	amount_x = min(max(0, amount_x), 32) //No less than 0, no greater than 32.
+	amount_y = min(max(0, amount_x), 32)
+	var/list/shift = list("x" = 0, "y" = 0)
+	switch(dir)
+		if(NORTH)
+			shift["y"] = amount_y
+		if(SOUTH)
+			shift["y"] = -amount_y
+		if(EAST)
+			shift["x"] = amount_x
+		if(WEST)
+			shift["x"] = -amount_x
+		if(NORTHEAST)
+			shift = list("x" = amount_x, "y" = amount_y)
+		if(NORTHWEST)
+			shift = list("x" = -amount_x, "y" = amount_y)
+		if(SOUTHEAST)
+			shift = list("x" = amount_x, "y" = -amount_y)
+		if(SOUTHWEST)
+			shift = list("x" = -amount_x, "y" = -amount_y)
+
+	return shift
diff --git a/code/game/atoms.dm b/code/game/atoms.dm
index 22cadfaa659..efc5e62827d 100644
--- a/code/game/atoms.dm
+++ b/code/game/atoms.dm
@@ -512,10 +512,11 @@ var/list/blood_splatter_icons = list()
 		overlays += blood_overlay
 
 /atom/proc/clean_blood()
-	germ_level = 0
-	if(islist(blood_DNA))
-		blood_DNA = null
-		return 1
+	if(!istype(src, /obj/effect/decal/cleanable/blood))
+		germ_level = 0
+		if(islist(blood_DNA))
+			blood_DNA = null
+			return TRUE
 
 
 /obj/item/clean_blood()
diff --git a/code/game/objects/effects/decals/Cleanable/humans.dm b/code/game/objects/effects/decals/Cleanable/humans.dm
index f17b5f6901a..02f89f6f0f6 100644
--- a/code/game/objects/effects/decals/Cleanable/humans.dm
+++ b/code/game/objects/effects/decals/Cleanable/humans.dm
@@ -22,6 +22,7 @@ var/global/list/image/splatter_cache=list()
 	var/amount = 5
 	appearance_flags = NO_CLIENT_COLOR
 	var/dry_timer = 0
+	var/off_floor = FALSE
 
 /obj/effect/decal/cleanable/blood/New()
 	..()
@@ -88,7 +89,7 @@ var/global/list/image/splatter_cache=list()
 
 //Add "bloodiness" of this blood's type, to the human's shoes
 /obj/effect/decal/cleanable/blood/Crossed(atom/movable/O)
-	if(ishuman(O))
+	if(!off_floor && ishuman(O))
 		var/mob/living/carbon/human/H = O
 		var/obj/item/organ/external/l_foot = H.get_organ("l_foot")
 		var/obj/item/organ/external/r_foot = H.get_organ("r_foot")
diff --git a/code/game/objects/effects/overlays.dm b/code/game/objects/effects/overlays.dm
index 96f52929da6..10d78bd2ae1 100644
--- a/code/game/objects/effects/overlays.dm
+++ b/code/game/objects/effects/overlays.dm
@@ -205,6 +205,7 @@
 	animate(src, pixel_x = target_pixel_x, pixel_y = target_pixel_y, alpha = 0, time = duration)
 
 /obj/effect/overlay/temp/dir_setting/bloodsplatter/xenosplatter
+	color = null
 	splatter_type = "xsplatter"
 
 /obj/effect/overlay/wall_rot
diff --git a/code/modules/mob/living/silicon/robot/robot.dm b/code/modules/mob/living/silicon/robot/robot.dm
index 7141e41363a..9524e3a9327 100644
--- a/code/modules/mob/living/silicon/robot/robot.dm
+++ b/code/modules/mob/living/silicon/robot/robot.dm
@@ -1172,14 +1172,18 @@ var/list/robot_verbs_default = list(
 		if(module.type == /obj/item/weapon/robot_module/janitor)
 			var/turf/tile = loc
 			if(isturf(tile))
-				tile.clean_blood()
+				var/floor_only = TRUE
 				if(istype(tile, /turf/simulated))
 					var/turf/simulated/S = tile
 					S.dirt = 0
 				for(var/A in tile)
 					if(istype(A, /obj/effect))
 						if(is_cleanable(A))
-							qdel(A)
+							var/obj/effect/decal/cleanable/blood/B = A
+							if(istype(B) && B.off_floor)
+								floor_only = FALSE
+							else
+								qdel(A)
 					else if(istype(A, /obj/item))
 						var/obj/item/cleaned_item = A
 						cleaned_item.clean_blood()
@@ -1200,6 +1204,8 @@ var/list/robot_verbs_default = list(
 								cleaned_human.update_inv_shoes(0,0)
 							cleaned_human.clean_blood()
 							to_chat(cleaned_human, "<span class='danger'>[src] cleans your face!</span>")
+				if(floor_only)
+					tile.clean_blood()
 		return
 #undef BORG_CAMERA_BUFFER
 
diff --git a/code/modules/projectiles/projectile.dm b/code/modules/projectiles/projectile.dm
index f2beec3f6bc..71ac935153b 100644
--- a/code/modules/projectiles/projectile.dm
+++ b/code/modules/projectiles/projectile.dm
@@ -71,6 +71,7 @@
 	if(!isliving(target))
 		return 0
 	var/mob/living/L = target
+	var/mob/living/carbon/human/H
 	if(blocked < 100) // not completely blocked
 		if(damage && L.blood_volume && damage_type == BRUTE)
 			var/splatter_dir = dir
@@ -81,11 +82,23 @@
 			else
 				var/blood_color = "#C80000"
 				if(ishuman(target))
-					var/mob/living/carbon/human/H = target
+					H = target
 					blood_color = H.species.blood_color
 				new /obj/effect/overlay/temp/dir_setting/bloodsplatter(target_loca, splatter_dir, blood_color)
 			if(prob(33))
-				L.add_splatter_floor(target_loca)
+				var/list/shift = list("x" = 0, "y" = 0)
+				var/turf/step_over = get_step(target_loca, splatter_dir)
+
+				if(get_splatter_blockage(step_over, target, splatter_dir, target_loca)) //If you can't cross the tile or any of its relevant obstacles...
+					shift = pixel_shift_dir(splatter_dir) //Pixel shift the blood there instead (so you can't see wallsplatter through walls).
+				else
+					target_loca = step_over
+				L.add_splatter_floor(target_loca, shift_x = shift["x"], shift_y = shift["y"])
+				if(istype(H))
+					for(var/mob/living/carbon/human/M in step_over) //Bloody the mobs who're infront of the spray.
+						M.bloody_hands(H)
+						/* Uncomment when bloody_body stops randomly not transferring blood colour.
+						M.bloody_body(H) */
 
 		var/organ_hit_text = ""
 		if(L.has_limbs)
@@ -110,6 +123,15 @@
 		add_logs(firer, L, "shot", src, reagent_note)
 	return L.apply_effects(stun, weaken, paralyze, irradiate, slur, stutter, eyeblur, drowsy, blocked, stamina, jitter)
 
+/obj/item/projectile/proc/get_splatter_blockage(var/turf/step_over, var/atom/target, var/splatter_dir, var/target_loca) //Check whether the place we want to splatter blood is blocked (i.e. by windows).
+	var/turf/step_cardinal = !(splatter_dir in list(NORTH, SOUTH, EAST, WEST)) ? get_step(target_loca, get_cardinal_dir(target_loca, step_over)) : null
+
+	if(step_over.density && !step_over.CanPass(target, step_over, 1)) //Preliminary simple check.
+		return TRUE
+	for(var/atom/movable/border_obstacle in step_over) //Check to see if we're blocked by a (non-full) window or some such. Do deeper investigation if we're splattering blood diagonally.
+		if(border_obstacle.flags&ON_BORDER && get_dir(step_cardinal ? step_cardinal : target_loca, step_over) ==  turn(border_obstacle.dir, 180))
+			return TRUE
+
 /obj/item/projectile/proc/vol_by_damage()
 	if(damage)
 		return Clamp((damage) * 0.67, 30, 100)// Multiply projectile damage by 0.67, then clamp the value between 30 and 100
diff --git a/code/modules/reagents/chemistry/reagents/water.dm b/code/modules/reagents/chemistry/reagents/water.dm
index 5c7657e9407..4eb6a246f2b 100644
--- a/code/modules/reagents/chemistry/reagents/water.dm
+++ b/code/modules/reagents/chemistry/reagents/water.dm
@@ -132,18 +132,27 @@
 	taste_message = "floor cleaner"
 
 /datum/reagent/space_cleaner/reaction_obj(obj/O, volume)
-	if(istype(O, /obj/effect/decal/cleanable))
-		qdel(O)
+	if(is_cleanable(O))
+		var/obj/effect/decal/cleanable/blood/B = O
+		if(!(istype(B) && B.off_floor))
+			qdel(O)
 	else
-		O.color = initial(O.color)
+		if(!istype(O, /atom/movable/lighting_overlay))
+			O.color = initial(O.color)
 		O.clean_blood()
 
 /datum/reagent/space_cleaner/reaction_turf(turf/T, volume)
 	if(volume >= 1)
-		T.color = initial(T.color)
-		T.clean_blood()
+		var/floor_only = TRUE
 		for(var/obj/effect/decal/cleanable/C in src)
-			qdel(C)
+			var/obj/effect/decal/cleanable/blood/B = C
+			if(istype(B) && B.off_floor)
+				floor_only = FALSE
+			else
+				qdel(C)
+		T.color = initial(T.color)
+		if(floor_only)
+			T.clean_blood()
 
 		for(var/mob/living/carbon/slime/M in T)
 			M.adjustToxLoss(rand(5,10))
diff --git a/code/modules/surgery/organs/blood.dm b/code/modules/surgery/organs/blood.dm
index 987b5cf53e4..bc19b6c6159 100644
--- a/code/modules/surgery/organs/blood.dm
+++ b/code/modules/surgery/organs/blood.dm
@@ -229,7 +229,7 @@
 			return list("O-", "O+")
 
 //to add a splatter of blood or other mob liquid.
-/mob/living/proc/add_splatter_floor(turf/T, small_drip)
+/mob/living/proc/add_splatter_floor(turf/T, small_drip, shift_x, shift_y)
 	if(get_blood_id() != "blood")//is it blood or welding fuel?
 		return
 	if(!T)
@@ -260,29 +260,50 @@
 			return
 
 	// Find a blood decal or create a new one.
-	var/obj/effect/decal/cleanable/blood/B = locate() in T
-	if(!B)
+	var/obj/effect/decal/cleanable/blood/B
+	if(!(locate(B) in T) || pixel_x || pixel_y)
 		B = new /obj/effect/decal/cleanable/blood/splatter(T)
+	else
+		B = locate() in T
 	B.transfer_mob_blood_dna(src) //give blood info to the blood decal.
 	if(temp_blood_DNA)
 		B.blood_DNA |= temp_blood_DNA
+	B.pixel_x = (shift_x)
+	B.pixel_y = (shift_y)
 	B.update_icon()
+	if(shift_x || shift_y)
+		B.off_floor = TRUE
+		B.layer = BELOW_MOB_LAYER //So the blood lands ontop of things like posters, windows, etc.
 
-/mob/living/carbon/human/add_splatter_floor(turf/T, small_drip)
+/mob/living/carbon/human/add_splatter_floor(turf/T, small_drip, shift_x, shift_y)
 	if(!(NO_BLOOD in species.species_traits))
 		..()
 
-/mob/living/carbon/alien/add_splatter_floor(turf/T, small_drip)
+/mob/living/carbon/alien/add_splatter_floor(turf/T, small_drip, shift_x, shift_y)
 	if(!T)
 		T = get_turf(src)
-	var/obj/effect/decal/cleanable/blood/xeno/B = locate() in T.contents
-	if(!B)
+	var/obj/effect/decal/cleanable/blood/xeno/B
+	if(!(locate(B) in T) || pixel_x || pixel_y)
 		B = new(T)
+	else
+		B = locate() in T
 	B.blood_DNA["UNKNOWN DNA"] = "X*"
+	B.pixel_x = (shift_x)
+	B.pixel_y = (shift_y)
+	if(shift_x || shift_y)
+		B.off_floor = TRUE
+		B.layer = BELOW_MOB_LAYER
 
-/mob/living/silicon/robot/add_splatter_floor(turf/T, small_drip)
+/mob/living/silicon/robot/add_splatter_floor(turf/T, small_drip, shift_x, shift_y)
 	if(!T)
 		T = get_turf(src)
-	var/obj/effect/decal/cleanable/blood/oil/B = locate() in T.contents
-	if(!B)
-		B = new(T)
\ No newline at end of file
+	var/obj/effect/decal/cleanable/blood/oil/B
+	if(!(locate(B) in T) || pixel_x || pixel_y)
+		B = new(T)
+	else
+		B = locate() in T
+	B.pixel_x = (shift_x)
+	B.pixel_y = (shift_y)
+	if(shift_x || shift_y)
+		B.off_floor = TRUE
+		B.layer = BELOW_MOB_LAYER