DEMON ATTACK (1982, Imagic)
Frying during the attract mode may cause the game to start with weird graphics. If so, the game may have numerous different effects-- you may only be able to shoot/move every few seconds (your ship turns yellow), you may be slower/faster, enemies may be tougher/easier, or an enemy may be a graphics scramble and be off the playfield so you can't shoot it, etc. The best effect I found was enemies don't shoot at all! Unfortunately, another effect was the aforementioned only being able to shoot/move every few seconds. This may still make the game easier, but when you break up the enemies into little birds they may slam into you when you're immobile.