There are no levels or anything. It's not even a game. Use arrow keys or wasd to move. You can remix the project to create your own platformer if you're too lazy to do the coding your self too! That's actually it. And for noobs, click da green flag at the top left corner.
The ground and the partial effect sprites are from @griffpatch, so credits to him. I also got the start sound and background from appel, a game by him. I did all the coding and the player sprites.