Although Robert Topala stated that there would be "five brand new and free levels" in Geometry Dash Meltdown, only three levels were initially released. The Coming Soon screen of the main menu slider has a tooltip which states that "There will be more levels, but are you prepared?".
The ship shown on the game's cover image cannot be unlocked.
November 13, 2015: Robert Topala entered a Twitch user's chat and begun a Q&A. He mentioned that a 'secret project' will be released before Update 2.1 and hopes that both will arrive before Christmas.
November 20, 2015: Topala posted a sneak peek of the 'secret project', revealing it to be Geometry Dash Meltdown.
November 23, 2015: Topala stated in a Twitch user's chat that "Its a new free app with some new levels. And the levels are pretty easy (pretty much like level 1-5 in normal)."
December 1, 2015: Topala stated in a Twitch user's chat that a trailer will be coming soon and that the game will be released first on mobile platforms, iOS and Android. He also mentioned that exclusive icons unlocked will be transferable to the full version, although after the release of Update 2.1.
December 11, 2015: Topala stated on TouchArcade that the app will be released before Christmas, while Update 2.1 will be delayed until January 2016.
December 16, 2015: Topala stated in a Twitch user's chat that the app is already done and is awaiting approval from Apple. He also released a new teaser trailer previewing Viking Arena, followed by the release date, being December 19, 2015.
December 19, 2015: The app is released and includes the first three levels.
March 4, 2016: Topala stated in a Twitch user's chat that a new update is planned to be released after Update 2.1 and will include a new level.
March 20, 2016: Topala says a new level will be added before Update 2.1, but will include associated features (such as the spider game mode) because of the long wait of the full version update. However, Update 2.1 was released before an update arrived for Meltdown.
August 16th 2017: RobTop comments on the daily level "Meltdown will be updated I just havent had time to make a level for it. :)".
November 19th 2017: Meltdown receives an iOS update with the description "This update is signed with Apple's latest signing certificate. No new features are included." The update is not recorded in its version history.