Geometry Dash is a running, jumping game. It features over 20 stages where you play as a customisable small cube, which you used to dodge 2D obstacles to the rhythm of electronic music using a single button to control the cube. If you hit any of the obstacles, you get sent back to the beginning of the level and have to start again. The levels get harder as you progress through the game and each level's difficulty is clearly indicated.

While the first several levels are relatively straightforward, the later ones are far more complex and require significant memorisation and quick reflexes and reactions to beat. Each level introduces a new type of gameplay, be it a portal that switches your direction or gravity or one that turns your cube into arrow that waves up and down the screen. The levels are designed with a retro style, although the later levels introduce more modern and detailed design elements. You can also create your own levels in the level editor and upload them for other players to enjoy.