diff --git a/code/__DEFINES/rockpaperscissors.dm b/code/__DEFINES/rockpaperscissors.dm
new file mode 100644
index 0000000000..77ba81938d
--- /dev/null
+++ b/code/__DEFINES/rockpaperscissors.dm
@@ -0,0 +1,7 @@
+#define ROCKPAPERSCISSORS_RANGE				3
+#define ROCKPAPERSCISSORS_TIME_LIMIT		20 SECONDS
+
+#define ROCKPAPERSCISSORS_LOSE				"lose"
+#define ROCKPAPERSCISSORS_WIN				"win"
+#define ROCKPAPERSCISSORS_TIE				"tie"
+#define ROCKPAPERSCISSORS_NOT_DECIDED		"not_decided"
\ No newline at end of file
diff --git a/code/_globalvars/lists/objects.dm b/code/_globalvars/lists/objects.dm
index 4de7c88bf7..fee70ee3d5 100644
--- a/code/_globalvars/lists/objects.dm
+++ b/code/_globalvars/lists/objects.dm
@@ -41,3 +41,6 @@ GLOBAL_LIST_EMPTY(ai_status_displays)
 
 GLOBAL_LIST_EMPTY(mob_spawners) 		    // All mob_spawn objects
 GLOBAL_LIST_EMPTY(alert_consoles)			// Station alert consoles, /obj/machinery/computer/station_alert
+
+//list of everyone playing rock paper scissors
+GLOBAL_LIST_EMPTY(rockpaperscissors_players)
diff --git a/code/datums/mutations/antenna.dm b/code/datums/mutations/antenna.dm
index 978802fd80..ad08b8ebdc 100644
--- a/code/datums/mutations/antenna.dm
+++ b/code/datums/mutations/antenna.dm
@@ -90,6 +90,8 @@
 				to_chat(user, "<span class='boldnotice'>You catch some drifting memories of their past conversations...</span>")
 				for(var/spoken_memory in recent_speech)
 					to_chat(user, "<span class='notice'>[recent_speech[spoken_memory]]</span>")
+			if(usr in GLOB.rockpaperscissors_players)
+				to_chat(user, "<span class='notice'>They're planning on playing [GLOB.rockpaperscissors_players[usr][1]]</span>")
 			if(iscarbon(M))
 				var/mob/living/carbon/human/H = M
 				to_chat(user, "<span class='boldnotice'>You find that their intent is to [H.a_intent]...</span>")
diff --git a/code/modules/mob/living/carbon/human/emote.dm b/code/modules/mob/living/carbon/human/emote.dm
index 1bfb72a415..04747ffcb4 100644
--- a/code/modules/mob/living/carbon/human/emote.dm
+++ b/code/modules/mob/living/carbon/human/emote.dm
@@ -192,3 +192,71 @@
 	key_third_person = "chimes"
 	message = "chimes."
 	sound = 'sound/machines/chime.ogg'
+
+//rock paper scissors emote handling
+/mob/living/carbon/human/proc/beginRockPaperScissors(var/chosen_move)
+	GLOB.rockpaperscissors_players[src] = list(chosen_move, ROCKPAPERSCISSORS_NOT_DECIDED)
+	do_after_advanced(src, ROCKPAPERSCISSORS_TIME_LIMIT, src, DO_AFTER_REQUIRES_USER_ON_TURF|DO_AFTER_NO_COEFFICIENT|DO_AFTER_NO_PROGRESSBAR|DO_AFTER_DISALLOW_MOVING_ABSOLUTE_USER, CALLBACK(src, .proc/rockpaperscissors_tick))
+	var/new_entry = GLOB.rockpaperscissors_players[src]
+	if(new_entry[2] == ROCKPAPERSCISSORS_NOT_DECIDED)
+		to_chat(src, "You put your hand back down.")
+	GLOB.rockpaperscissors_players -= src
+
+/mob/living/carbon/human/proc/rockpaperscissors_tick() //called every cycle of the progress bar for rock paper scissors while waiting for an opponent
+	var/mob/living/carbon/human/opponent
+	for(var/mob/living/carbon/human/potential_opponent in (GLOB.rockpaperscissors_players - src)) //dont play against yourself
+		if(get_dist(src, potential_opponent) <= ROCKPAPERSCISSORS_RANGE)
+			opponent = potential_opponent
+			break
+	if(opponent)
+		//we found an opponent before they found us
+		var/move_to_number = list("rock" = 0, "paper" = 1, "scissors" = 2)
+		var/our_move = move_to_number[GLOB.rockpaperscissors_players[src][1]]
+		var/their_move = move_to_number[GLOB.rockpaperscissors_players[opponent][1]]
+		var/result_us = ROCKPAPERSCISSORS_WIN
+		var/result_them = ROCKPAPERSCISSORS_LOSE
+		if(our_move == their_move)
+			result_us = ROCKPAPERSCISSORS_TIE
+			result_them = ROCKPAPERSCISSORS_TIE
+		else
+			if(((our_move + 1) % 3) == their_move)
+				result_us = ROCKPAPERSCISSORS_LOSE
+				result_them = ROCKPAPERSCISSORS_WIN
+		//we decided our results so set them in the list
+		GLOB.rockpaperscissors_players[src][2] = result_us
+		GLOB.rockpaperscissors_players[opponent][2] = result_them
+
+		//show what happened
+		src.visible_message("<b>[src]</b> makes [GLOB.rockpaperscissors_players[src][1]] with their hand!")
+		opponent.visible_message("<b>[opponent]</b> makes [GLOB.rockpaperscissors_players[opponent][1]] with their hands!")
+		switch(result_us)
+			if(ROCKPAPERSCISSORS_TIE)
+				src.visible_message("It was a tie!")
+			if(ROCKPAPERSCISSORS_WIN)
+				src.visible_message("<b>[src]</b> wins!")
+			if(ROCKPAPERSCISSORS_LOSE)
+				src.visible_message("<b>[opponent]</b> wins!")
+
+		//make the progress bar end so that each player can handle the result
+		return DO_AFTER_STOP
+
+	//no opponent was found, so keep searching
+	return DO_AFTER_PROCEED
+
+//the actual emotes
+/datum/emote/living/carbon/human/rockpaperscissors
+	message = "is attempting to play rock paper scissors!"
+
+/datum/emote/living/carbon/human/rockpaperscissors/rock
+	key = "rock"
+
+/datum/emote/living/carbon/human/rockpaperscissors/paper
+	key = "paper"
+
+/datum/emote/living/carbon/human/rockpaperscissors/scissors
+	key = "scissors"
+
+/datum/emote/living/carbon/human/rockpaperscissors/run_emote(mob/living/carbon/human/user, params)
+	if(!(user in GLOB.rockpaperscissors_players)) //no using the emote again while already playing!
+		. = ..()
+		user.beginRockPaperScissors(key)
diff --git a/tgstation.dme b/tgstation.dme
index 79c4274722..de6ee1a6bf 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -96,6 +96,7 @@
 #include "code\__DEFINES\reagents_specific_heat.dm"
 #include "code\__DEFINES\research.dm"
 #include "code\__DEFINES\robots.dm"
+#include "code\__DEFINES\rockpaperscissors.dm"
 #include "code\__DEFINES\role_preferences.dm"
 #include "code\__DEFINES\rust_g.dm"
 #include "code\__DEFINES\say.dm"