Zombie Assault: Sniper is a 3D first-person shooting game, with a survival horror element. The player must progress through dozens of levels, which are filled with zombies that must be defeated. As the game advances, the zombies become increasingly difficult to kill, although the player gains access to a wider selection of guns and other weapons, which help to even the odds. While the game does include some play-to-win elements, which can be frustrating, it is a fun experience even without investing in bonus items, and the difficulty presents a very real challenge, even for the most experienced FPS players.