This is a full version of Geometry Dash Subzero! This game has a very long loading time!
Use mouse and click the left button in rythm.
The first thing you need to do next is to select your favorite character to play. You can choose from many forms. But also many of the cool forms are locked which you will need to unlock by buying the full game. Anyway, the free version is more than enough to have a decent fun, but for those hardcore players, there is always a full version with more stuff and more characters.