SAS Zombie Assault 4 September 4, 2000 By admin in S, Slider Tags: Zombie Game Read this if the game doesn't load. RIP Flash! Go Fullscreen SAS Zombie Assault 4 (aka SAS 4) SAS Zombie Assault 4 or SAS 4 Unblocked game is a zombie shooting game. Press 1 to activate your ability, press F to throw a grenade, move with WASD keys. You can also play SAS 3 and SAS 2 games