Zombies
Finally a shooting game where the shooter will be killed sooner or later! Oh wait, isn't it always the case when you are shooting zombies? Anyway aim your shotgun at the closest zombie and fire! You don't need to reload, just keep firing at the realistically looking zombies. Is it true that all bogans turn zombies, or is it just I can't tell the difference?
Space Killer
Piloting surprisingly big and ugly space ship, fire blue stuff at lobster-like enemy vessels who can do nothing more but move straight ahead. If they collide with you, you are dead. If you shoot them, they are dead. If you avoid a collision, everyone is happy and alive, but you are not getting any points. You are a space killer, so kill some harmless monsters to gain some points or something!