Otherwise known, we're informed, as The Muties Stole My Truck, Mutant Fortress is a sort of mishmash of Ghosts And Goblins, Green Beret and Cobra.
In fact, the first level is almost a straight G&G rip-off, with zombies emerging from the ground, gravestones and swooping birds. The other two lean a bit more towards Green Beret - soldiers, that kind of thing. Add-on weapons abound, and that big-game feel is simulated by the use of a multi-load system.
With a pedigree as safe as that, Mutant Fortress couldn't really go wrong, and luckily it hasn't. Although the graphics are merely passable, those muties keep on coming and even your joystick will be perspiring before long. A nice touch is the mantraps which immobilize you for a while - best to jump over them. It's a shame they couldn't have come up with a few more bits and pieces like that, and maybe a couple ore levels to pad it out a bit. Still, mustn't grumble.