Hello, and welcome to my platformer engine! You can use WASD or arrow keys to move, and press Space as an alternative jump. This engine is designed to smoothly run any at speed, without lagging it chunks. basically, you can control the FPS, but it doesn't seem laggy if you set it low. If you need slow-mo in any of your games, or if you are just looking for a platformer engine, I hope you choose this one. Feel free to remix and add more levels and features! Keep on scratching! :D