geometry dash online is an immensely popular rhythm-based platformer game that can be played online. It was developed by Robert Topala, also known as RobTop Games. The game was first released for mobile devices in 2013 and later made available for other platforms, including online browsers.

In Geometry Dash Online, players navigate through a series of challenging levels filled with obstacles, spikes, and other hazards. The objective is to guide the game's square-shaped character, known as the "icon," through the level by jumping, flying, or flipping to avoid obstacles and reach the end of the level. The gameplay is synchronized with upbeat electronic music, adding to the excitement and rhythm of the game.

Geometry Dash Online offers different difficulty levels, ranging from easy to demon levels, with each level becoming progressively more challenging. The game requires precise timing, quick reflexes, and memorization of level layouts to successfully complete each level.

The online version of Geometry Dash allows players to compete with others on leaderboards, showcasing their skills and achievements. Additionally, the game offers unlockable icons, colors, and other customization options, allowing players to personalize their gameplay experience.