diff --git a/data/graphics.js b/data/graphics.js
index 9495a3045..b8231f43e 100644
--- a/data/graphics.js
+++ b/data/graphics.js
@@ -142,6 +142,11 @@ var BattleEffects = {
 		BattleEffects[i].url = Tools.resourcePrefix + BattleEffects[i].url;
 	}
 })();
+var BattleBackdropsFour = [
+	'bg-gen4.png',
+	'bg-gen4-cave.png',
+	'bg-gen4-snow.png'
+];
 var BattleBackdrops = [
 	'bg-beach.png',
 	'bg-beachshore.png',
diff --git a/fx/bg-gen4-cave.png b/fx/bg-gen4-cave.png
new file mode 100644
index 000000000..ad4a76983
Binary files /dev/null and b/fx/bg-gen4-cave.png differ
diff --git a/fx/bg-gen4-snow.png b/fx/bg-gen4-snow.png
new file mode 100644
index 000000000..1b42e5d30
Binary files /dev/null and b/fx/bg-gen4-snow.png differ
diff --git a/js/battle.js b/js/battle.js
index 5a604d4ec..7a10a988b 100644
--- a/js/battle.js
+++ b/js/battle.js
@@ -1,4 +1,4 @@
-/*
+/*
 
 License: GPLv2
   <http://www.gnu.org/licenses/gpl-2.0.html>
@@ -2241,7 +2241,7 @@ var Battle = (function () {
 		if (!Tools.prefs('nopastgens')) {
 			if (this.gen <= 2) this.backdropImage = 'bg-gen1.png';
 			else if (this.gen <= 3) this.backdropImage = 'bg-gen3.png';
-			else if (this.gen <= 4) this.backdropImage = 'bg-gen4.png';
+			else if (this.gen <= 4) this.backdropImage = BattleBackdropsFour[Math.floor(Math.random() * BattleBackdropsFour.length)];
 		}
 		if (this.bgElem) this.bgElem.css('background-image', 'url(' + Tools.resourcePrefix + 'fx/' + this.backdropImage + ')');
 	};