Necrosphere

"Necrosphere" is a single-player science fiction platformer game with a unique twist: it's controlled using only two buttons. In the game, you play as Agent Terry Cooper, who, after being fatally injured, finds himself in the afterlife and must navigate the Necrosphere to find a way back to the world of the living. With at least 2.5 hours of challenging gameplay, an original soundtrack, and a humorous side story, "Necrosphere" is a mind-bending and entertaining metroidvania game.