diff --git a/GainStation13/code/mechanics/fatness.dm b/GainStation13/code/mechanics/fatness.dm
index 29370458..5ad4c6ed 100644
--- a/GainStation13/code/mechanics/fatness.dm
+++ b/GainStation13/code/mechanics/fatness.dm
@@ -52,6 +52,9 @@
 	else			//If it's not being hidden
 		fatness = fatness_real //Make their current fatness their real fatness
 
+	if(client?.prefs?.weight_gain_extreme)
+		xwg_resize()
+
 	return TRUE
 
 
@@ -102,11 +105,21 @@
 	fatness_hidden = TRUE
 	fatness_over = hide_amount
 	fatness = fatness_over	//To update a mob's fatness with the new amount to be shown immediately
+	if(client?.prefs?.weight_gain_extreme)
+		xwg_resize()
 
 	return TRUE
 
 /mob/living/carbon/proc/fat_show()				//If something that hides fatness is removed or expires, it'll call this method
 	fatness_hidden = FALSE
 	fatness = fatness_real	//To update a mob's fatness with their real one immediately
+	if(client?.prefs?.weight_gain_extreme)
+		xwg_resize()
 
 	return TRUE
+
+/mob/living/carbon/proc/xwg_resize()
+	var/xwg_size = sqrt(fatness/FATNESS_LEVEL_BLOB)
+	xwg_size = min(xwg_size, RESIZE_MACRO)
+	xwg_size = max(xwg_size, custom_body_size*0.01)
+	resize(xwg_size)
diff --git a/GainStation13/code/modules/client/preferences/preferences.dm b/GainStation13/code/modules/client/preferences/preferences.dm
index f7f591be..f8166f8f 100644
--- a/GainStation13/code/modules/client/preferences/preferences.dm
+++ b/GainStation13/code/modules/client/preferences/preferences.dm
@@ -13,6 +13,8 @@
 	var/weight_gain_magic = FALSE
 	///Weight gain from viruses
 	var/weight_gain_viruses = FALSE
+	///Extreme weight gain
+	var/weight_gain_extreme = FALSE
 
 	///Does the person wish to be involved with non-con weight gain events?
 	var/noncon_weight_gain = FALSE
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 8702b594..0f509622 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -1059,6 +1059,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 			dat += "<b>Weight Gain - Weapons:</b><a href='?_src_=prefs;preference=weight_gain_weapons'>[weight_gain_weapons == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 			dat += "<b>Weight Gain - Magic:</b><a href='?_src_=prefs;preference=weight_gain_magic'>[weight_gain_magic == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 			dat += "<b>Weight Gain - Viruses:</b><a href='?_src_=prefs;preference=weight_gain_viruses'>[weight_gain_viruses == TRUE ? "Enabled" : "Disabled"]</a><BR>"
+			dat += "<b>Extreme Weight Gain:</b><a href='?_src_=prefs;preference=weight_gain_extreme'>[weight_gain_extreme == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 
 			//Add the Hyper stuff below here
 			dat += "<h2>Hyper Preferences</h2>"
@@ -2623,6 +2624,8 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					weight_gain_magic = !weight_gain_magic
 				if("weight_gain_viruses")
 					weight_gain_viruses = !weight_gain_viruses
+				if("weight_gain_extreme")
+					weight_gain_extreme = !weight_gain_extreme
 				if("noncon_weight_gain")
 					noncon_weight_gain = !noncon_weight_gain
 				if("max_fatness")
diff --git a/code/modules/client/preferences_savefile.dm b/code/modules/client/preferences_savefile.dm
index edf5db99..b87e0420 100644
--- a/code/modules/client/preferences_savefile.dm
+++ b/code/modules/client/preferences_savefile.dm
@@ -153,6 +153,7 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 	S["weight_gain_magic"] >> weight_gain_magic
 	S["weight_gain_viruses"] >> weight_gain_viruses
 	S["weight_gain_weapons"] >> weight_gain_weapons
+	S["weight_gain_extreme"] >> weight_gain_extreme
 	S["wg_rate"] >> wg_rate
 	S["wl_rate"] >> wl_rate
 	S["noncon_weight_gain"] >> noncon_weight_gain
@@ -292,6 +293,7 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 	WRITE_FILE(S["weight_gain_viruses"], weight_gain_viruses)
 	WRITE_FILE(S["weight_gain_chems"], weight_gain_chems)
 	WRITE_FILE(S["weight_gain_weapons"], weight_gain_weapons)
+	WRITE_FILE(S["weight_gain_extreme"], weight_gain_extreme)
 	WRITE_FILE(S["wg_rate"], wg_rate)
 	WRITE_FILE(S["wl_rate"], wl_rate)
 	WRITE_FILE(S["noncon_weight_gain"], noncon_weight_gain)