Zombie Grinder is a new action game for Linux game featuring fast paced zombie shooting combat and retro 16 bit style graphics.
The game will feature numerous weapons, ammunition types, achievements and will allow up to 4 player online co-op. Devs have presented the game at MineCon and a special pre-alpha demo has been released which is Windows only at the moment. However they have promised that Mac and Linux builds will be released as soon as possible.
The game will be completely free and you will get the SDK as well allowing you to mod things. Check out the trailer below: