DESC: Commander Keen finds precocious 8-year-old superhero Billy Blaze on an all-new quest to save the world from treacherous alien adversaries. A side-scrolling platform action-adventure game, Commander Keen challenges players to save the world by recovering the super-powerful plasma crystals hidden on three alien worlds. Each world contains several multilevel maps rife with progressively more precarious puzzles, toxic slime pits, and secret areas. You will face off against more than 35 different aliens and megabosses with your trusty neural ray gun as you collect secret keys, uncover clues, and ride magical platforms and special teleporters.