Wow, 21 years since Keen was released! I loved making those games. The first games we made for a pure love of gaming.
One tidbit on this anniversary: the “swear word” in the one level of Keen was actually deliberately misspelled! Just a dumb joke that people who found it would assume what it was, then be wrong at the last letter. Sort of like the tiles drawn out of the Scrabble bag in Hitchhikers. 🙂 Always knew there was something fundamentally wrong with the universe.
Anyway, happy birthday, dude!