Came across a pretty fun looking game today called Zombie Grinder by Twin Drills. It’s certainly not new but it’s improved a lot in the time that it’s been available on Desura. It’s still in it’s Alpha phase and it’s free but you can donate to support them and receive some pretty cool stuff  like a laser cannon and a flare gun. Looks like it would be fun to play with some friends on one of the endless waves modes. If you want to try it out, pick it up directly from Twin Drill’s website or on Desura.