Play Commander Keen 9: Battle of the Brains Online

Commander Keen 9: Battle of the Brains came out in 2011 as part of the MS-DOS Classic Games collection, developed by fans who wanted to finish the series properly. It feels like a game that could have existed in the early 90s, with its pixelated charm and straightforward platforming action.

You control Billy Blaze, aka Commander Keen, navigating through enemy-filled rooms and using your pogo stick to jump over hazards and defeat foes. The main goal is to stop Mortimer McMire by exploring each screen, collecting keycards, and solving simple puzzles. The pacing is brisk, and the difficulty stays manageable without too many frustrating moments. It feels like returning to a familiar, comfortable challenge.

Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".