Arrow keys to move (you can also use space to jump!) Click the mouse, then press 1 to start. It's recommended you play the original red first. If you are playing on mobile, then go ahead. Levels 11-18 will basically be impossible.
Levels: 18 I added even more levels (3), but 17 is HARD. There is a common bug in level 18 where you get stuck in the wall. I have added a failsafe that kills the player when this happens. If that didn't happen, and you still died while standing on the starting ground, make sure to jump off the platform within 3 seconds of starting.