Play any type of Game at Y8.com. The biggest Game Collection to play free online. Flash, Unity 3D, Html5, Android, Java and Shockwave.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
You have to shoot all your enemies appearing in your sight. Green crosshairs mean you can shoot. Red crosshairs mean you are either hit or hiding behind and obstacle. There is automatic reload, but you can press R KEY to reload as well.