Rename gun game setting to gatekeeper

client/src/components/util/GameCreationForm/GameCreationForm.jsx

@@ -263,8 +263,8 @@ const GameCreationForm = ({ afterCreate, lastSettings = null }) => {
             <Item value={FROZEN} display="❄️">
               Frozen
             </Item>
-            <Item value={GUN_GAME} display="🔫">
-              Gun Game
+            <Item value={GUN_GAME} display="🚪">
+              Gatekeeper
             </Item>
           </Dropdown>
           <Dropdown