GTA: Bullet Overflow
Gangster are in your town and they are in for no good. As an ex-cop, even if you are out of duty, you must get rid of them as they will kill you when they found out that you are a cop once. These guys don't like any cop, even those retired ones. The idea of the game is a fast draw since you need to shoot the enemies before they can even react. Luckily for you, that you have some life bar. When the life bar goes down to zero then the game is over. You only need to kill seven gang member on each level. Unlock better guns to easily kill gang members.