Commander Keen 1: Marooned on Mars

Join 8-year-old genius Billy Blaze, who, in his guise as Commander Keen, has ventured to Mars. His spaceship parts have been stolen by the nefarious Vorticons, leaving him marooned! Now it's up to you to guide Keen through four alien cities, navigating treacherous platforms, dodging hostile creatures, and recovering all the essential components of his ship, the Bean-with-Bacon Megarocket. Only then can he return to Earth and thwart the impending alien invasion. Prepare for classic platforming action, secret areas, and a timeless adventure that launched a legend.