Space/Up arrow = Jump. Hold Down Space/Up Arrow = Multi-jump. Up arrow = Steer vehicle up. Down arrow = Steer vehicle down.
Geometry Dash is a game genre that is like running, jumping and flying along the rhythm, overcoming the obstacles on your run, utilising special ports to change your speed in a short time, trying to don’t touch sharp objects or obstructions, if not you will play again from the beginning.
Hold the spacebar or the up key to jump continuously, don't be in a hurry, keep calm will help you overcome all obstacles.