Open Source Commander Keen (Series) Alternatives

    Commander Keen is described as ': Invasion of the Vorticons: Episode 1: Marooned on Mars (Dec. 14th 1990) Episode 2: The Earth Explodes (1991) Episode 3: Keen Must Die!'. There are four alternatives to Commander Keen for various platforms. The best alternative is Commander Genius, which is both free and Open Source.

    The list of alternatives was last updated Dec 6, 2020