Your little square moves forward nonstop, so all you have to do is jump at the right times to avoid the different obstacles. That said, you normally need to measure these jumps down to the last millimeter or you'll run into something and have to start the level over from the beginning.
Geometry Dash World has some dozen different levels, along with daily challenges and other special events. Plus, you can unlock new colors, characters, settings, and much more.
Geometry Dash World is a platformer with a simple gameplay that still manages to offer a tremendously difficult challenge. Best of all, it does so in a fun way, showing you at every moment that if you fail, it's your own darn fault.
Requires Android 4.0 or higher.