Pretty neat that you get to customize your moveset. There are a few clunky mechanics here and there, and the customizations may be a little uncertain, but it's overall a solid idea and game.

i think the idea is pretty clever- and some of the levels are fun too, especially the first half- but there are a few presentation things here missing that i think would really help it (like sounds and music, even if you just get them from online instead of recording them yourself)

also just opening the game kind of throws a lot of numbers at the player... acceleration, deceleration, and top speed could definitely be combined into just "speed". the same could be said for gravity and jump strength. and the checkboxes kind of don't come with any reasoning (why would i ever not want a double jump?)

reading that back, i sound kind of overcritical. sorry. but i think this game is pretty close to being something really interesting.

the title of the game "make your own platformer" is wrong because you can easily think of level editors but that's not the case, but the concept of changing the physics of things is interesting, but the fact that all the already unlocked levels and all those variables already unlocked doesn't make me really want to play all the levels.