SAS Zombie Assault II – Insane Asylum: You are a member of the elite fighting unit, the SAS. You have training, weapons, speed and cunning. They are an army of the undead. They number more than 6000. You like those odds. Asylum is the next chapter in the SAS 2: Zombie Assault series. Featuring a huge new map, new and improved zombies, and loads of new weapons. Use WASD keys to move around. Use your mouse to aim and shoot. Press "R" key to reload. Use "Q" and "E" keys to change weapons. Press "G" key to throw grenade. Good luck!