It's a polygonal COD Zombie clone. The game is not bad and has great potential, but there is so much annoying stuff that needs to be fixed.
First, there are so many missing sound effects. Zombies don't make any sound when they move, attack, or die. Fixing barricade, doesn't make any sound and no sound when they attack the barricade, so explode sound of the grenade, so sound of purchase perk. Note that you can purchase max 6 perks and you can buy same stuff so watch out to don't press the buy button rapidly otherwise you'll get multiple same perks in a second and lost all the points you've earned.
Second, you can't change the options and check key bindings on the menu screen. You can only open the settings when you load the map.
Third, the most annoying stuff is that you can easily get stuck on the props. There are some props that don't make any sense you can just jump and pass through like very low height tables. You are stuck there, you can't push the zombies, then you just die. This is a really bullshit and makes me dead in the very early wave.
Fourth, zombie spawns are just pure random makes game very tedious and fucking boring at the early waves. If you want to intense fight, DO NOT OPEN the other areas until reaches at least wave 8 or all the zombies scatters whole entire map and you have to find and kill them one by one. This can be easily fixed by spawn zombies near by current player's position, not the one of the spawn points on the map pure random.
Fifth, there's only one map.
Overall 3/5, not bad but kind a annoying and really boring at the first time, but have great potential. Weapon upgrades and unlocking system is really good. Animations good. Hope to dev see this and fix all those problems.