It's a zombie survival game where players have a gun, a sidearm, limited ammo, and a horde of zombies to face. It's pretty simple, with no actual storyline, bosses, and missions, just a zen mode of trying to escape a horde of zombies.
The gameplay is pretty basic. Players must conserve ammo and medpacks as they are limited, all while facing down zombie after zombie after zombie. Because of this, players must know when to fight of when to run. Survival game indeed.
My biggest gripe for the game is the lack of story and bosses, as well as true objectives other than escape. It made the game a bit repetitive. The camera control is also quite clumsy, and I found this really annoying, especially when I am trying to avoid the zombies because I am running low on ammo.
Overall, it's not a bad game. Graphics are nice, and I had fun. I just wish they made this with more varied zombies and an actual story.