Robert Topala is the developer of the side-scrolling Scratch Geometry Dash music platforming game series. On August 13, 2013, it was first released for iOS and Android. On December 22, 2014, Windows and macOS versions were released. In this game, players control a symbol as it moves through musical levels, dodging spikes and other hazards.

The developer, RobTopGames, is responsible for 26 levels in the series, 22 of which are auto-scrolling and 4 of which are categorized as "platformer" levels. One noteworthy feature of Geometry Dash is its level creation system, which lets users create original levels, share them online, and interact with other players' levels. Earning in-game currency, such as stars, moons, coins, orbs, or diamonds, can come from a variety of sources, like level completion, user-generated levels, or chest discoveries.