Game: Doom Troopers - The Mutant Chronicles

As far a run and gun games go, this one will keep you on the edge of your seat. Take control of one of two soldiers, each with different guns, and blast your way through the solar system. Travel through the mine infested jungles of Venus to erradicate the alien dictator. Brave the fiery planet of Mercury and slay the crazy wizard who has made the planet his home. Gear up as you trek the frozen surface of the former planet Pluto to decomission a nuclear reactor that the aliens are fiercely defending. And finally, travel through dimentions as you infiltrate planet Nero and defeat the alien commando. This game packs heavy duty firepower and enough gore to put other shooters to shame.