- When checking state-based effects, check the game over condition early to account for win conditions that trigger before the cards die due to zero toughness (e.g. Platinum Angel + lethal Hurricane that gets both players to zero or below).

- To be on the safe side I left the original check intact and I'm running it in case the first check wasn't positive, assuming that the situation may change somehow after all the card-based state effects are checked and relevant effects apply. Is this necessary?
- Please test this in various win/lose conditions and let me know if anything is wrong with this approach, I can try to adapt or revert as necessary.

forge-game/src/main/java/forge/game/GameAction.java

@@ -691,6 +691,9 @@ public class GameAction {
         game.getStack().setFrozen(true);
         game.getTracker().freeze(); //prevent views flickering during while updating for state-based effects
 
+        // check the game over condition early for win conditions such as Platinum Angel + Hurricane lethal for both players
+        checkGameOverCondition();
+
         // do this multiple times, sometimes creatures/permanents will survive when they shouldn't
         for (int q = 0; q < 9; q++) {
             checkStaticAbilities(false, affectedCards);
@@ -800,7 +803,12 @@ public class GameAction {
             game.fireEvent(new GameEventCardStatsChanged(affectedCards));
         }
 
-        checkGameOverCondition();
+        // recheck the game over condition at this point to make sure no other win conditions apply now.
+        // TODO: is this necessary at this point if it's checked early above anyway?
+        if (!game.isGameOver()) {
+            checkGameOverCondition();
+        }
+        
         if (game.getAge() != GameStage.Play) {
             return;
         }