Nightpoint.io is a frantic multiplayer shooter in which you must fight in a 2D cityscape against hordes of undead zombies. (crazygames.com)
A total of 22 zombie variants, from regular old zombies to ax wielding maniacs, to giant undead zombie animals packing explosives, to an enormous minigun - weilding boss. (gamersinbeta.com)
There is a standard tea deathmatch mode, but there is also an awesome zombie survival mode too in which you must fight against waves of evil undead zombies! (crazygames.com)