Nations Red. Developed by DiezelPower, the game is now available to purchase and dowload from the game's official web site for $14.99.
And what do you get for that amount of money? You get a game that has 18 quests as you blast through tons of the undead (and some boss battles) with firearms, grenades, and more. There's also various weapons modifications and power ups to pick up and a number of gameplay modes including freeplay, survival and an unlockable mode called Blood Drive.
[Via Blue's News]