Geometry Dash Meltdown

Overview
Geometry Dash Meltdown is a free ad-supported expansion app of Geometry Dash developed and published by RobTop Games and released on December 19, 2015 for iOS and Android. It features 3 exclusive levels, with limited achievements, icons and collectibles. The ability to transfer certain unlockable data over to the full version through user accounts is also available.

Trivia

 * All 3 Soundtracks in Geometry Dash Meltdown are made by F-777.
 * Robtop said that there would be 5 levels in this version, but there were only 3 levels when the version was released.