Yeah my game is exactly that, someone even pointed yours out in the comments of mine, and right after I played one more with the same idea. I'd like to think we all took it in slightly different directions though. I definitely tried to focus on actions that require you to combine buttons and making the player juggle those. Yours definitely felt like a more traditional platformer shoot'emup that forced you to conserve and plan out your resources, and that third one really felt more like a puzzle game rather that a platformer.
All in all though I really enjoyed all three of them, and it didn't really feel like I was playing the same game.