I made this a while ago, but the engine absolutely sucks. the music was pulled from the internet, then turned to beeps and boops.
press Z to enter a level, and press left and right to change the level you want to play. Press the up arrow key to jump. press P if you want to go into the level editor. while in the level editor press A and D to change the camera position. you also just drag the mouse to place objects. you can change the selected object by pressing Q and E. whahoo. the more you know.