Killbot

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Cooperative third person shooter. Destroy masses of zombies.
"KILLBOT" hurricane online shooter with a variety of game modes and a huge arsenal of weapons. Fight with other players or team up with them to defeat the hordes of zombies and mutants!

Features:
• Multiplayer combat with up to 12 players connected online.
  
• REAL-TIME CO-OP AGAINST THE ZOMBIE
  
• Mission
  
• Deadly weapons
  
• Survival
  
• Download free full version game and enjoy unlimited play!