If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Join up with the rest of your team to destroy the alien forces that have attacked earth! Personalize your character and upgrade your wide array of weaponry with add ons including Laser Sight, and a shield.
W,A,S,D - Move.
Mouse - Aim / Shoot.
R - Reload.
Q - Weapon change.