This game is a greater improvement compared to the previous title.  Your characters move much quicker, your mutant powers are unlimited, the graphics are a little better, and the difficulty is fair with the gameplay.  This game definitley stood the test of time and is also better than Mutant Apocalypse for Super NES. You go through several levels fighting your way through armed ninjas, Acolyte soldiers, pre-historic reptiles, savage land mutants, phalanx robots and clones and the difficulty rises as you move on, so if you made it that far, you've been  dared to face pure torture so plan wisely. Whatever you do, do not use a 2 player co-op unless your partner is as skilled and as fast paced as you because not only the overall gameplay slows down, but getting ahead will be difficult if he/she sucks.  Like the previous game, the many obsticles you must face is not designed for a two player co-op.  This isn't Ninja Turtles or Contra, so you can't mess up if you dare to use the 2 player co-op.