Arrow keys to move or WAD to move. Up arrow, W, or space to jump. You can walljump. This is more like @deathcharge415's code but I added new stuff. Press H if you get stuck on level 52. Mobile Friendly Version! Tap the screen to jump. Move by dragging finger.
Credits: @isna4b4 for basic things. Me for making it mobile. Notes: Playable, will update when the original has more levels.