Most GitHub mirrors offer the Geometry Dash Lite experience or fan-made recreations for free.
Works on Chromebooks and older hardware that might struggle with the full version. geometry dash github.io
Some repositories feature unique custom levels and skins not found in the official trial. How to Play Most GitHub mirrors offer the Geometry Dash Lite
Look for the green diamond icon. It allows you to set checkpoints so you don't have to restart the entire level after a crash. Is it Safe? geometry dash github.io