Raze 4

Just like the previous versions, in Raze 4 you can play in a human and alien mode but now with Raze 4 you can play a brand new zombie mode! To fight these undead brain eaters you need to shoot and fight your way through the Humans and Aliens game mode to be able to unlock the Zombies mode. Kill all the enemies that stand in your way to finish achievements and earn lots of gold that you will need later on in the game. Use the gold to upgrade your weapons, purchase new gear, and unlock new abilities in the shop.