diff --git a/forge-game/src/main/java/forge/game/GameFormat.java b/forge-game/src/main/java/forge/game/GameFormat.java
index b2351f115eb..fe04577d8bd 100644
--- a/forge-game/src/main/java/forge/game/GameFormat.java
+++ b/forge-game/src/main/java/forge/game/GameFormat.java
@@ -294,6 +294,7 @@ public class GameFormat implements Comparable<GameFormat> {
             coreFormats.add("Legacy.txt");
             coreFormats.add("Vintage.txt");
             coreFormats.add("Commander.txt");
+            coreFormats.add("Extended.txt");
             coreFormats.add("Brawl.txt");
 
         }
diff --git a/forge-gui/res/formats/Sanctioned/Extended.txt b/forge-gui/res/formats/Sanctioned/Extended.txt
new file mode 100644
index 00000000000..75c6c055e97
--- /dev/null
+++ b/forge-gui/res/formats/Sanctioned/Extended.txt
@@ -0,0 +1,7 @@
+[format]
+Name:Extended
+Order:107
+Type:Sanctioned
+Type:Historic
+Sets:SOM, MBS, NPH, M12, ISD, DKA, AVR, M13, RTR, GTC, DGM, M14, THS, BNG, JOU, M15
+Banned:Ponder; Mental Misstep