Games like Commander Keen

Commander Keen: first released 1990 by id Software.

In the series: Commander Keen in Invasion of the Vorticons (1990), Commander Keen in Goodbye, Galaxy! (1991), Commander Keen in Keen Dreams (1991).

2 games inspired by Commander Keen

• Commander Genius: Engine that runs all classic Commander Keen episodes.
• Omnispeak: Reimplementation of the Keen Galaxy engine, hosted on the author's own site.