Shooting free online games. You know, games where you shoot stuff with some stuff that can shoot stuff. And yes, you can play these online, on your browser.
Gangsta: Gangster vs. Zombies is a story about the last action hero, that stand up to kill all the zombies to save the world. Controls Use the WASD keys to move. Use the mouse to aim. The left click shoots. Keys 1 to 5 are used to select weapons.