The gameplay is very similar to Doom, where you have to kill everything that moves, but in Marathon you actually have allies to help you. You’ll get a massive arsenal of weapons to back you up and, unlike Doom, which has relatively few enemies, Marathon 2 is packed with cannon fodder, so you’ll need to stay on your toes at all times. Marathon 2 – Durandal is an older but highly popular first-person shooter.Download Marathon 2 – Durandal