Geometry Dash

Geometry Dash is a rhythm-based platformer game developed and published by RobTop Games. It was released for $1.99 USD on August 13, 2013 for iOS and Android, and for $3.99 USD on December 22, 2014 for Steam. A lite version of the game is available on mobile devices with fewer features, as well as a free expansion, Geometry Dash Meltdown, which includes exclusive levels.

The player takes the form of different entities with unique mechanics such as a cube, a ball or a UFO. Using one-touch gameplay, the player must try to navigate through a series of interactive obstacles and behaviour-manipulating portals to reach the end of levels without crashing, while listening to exciting soundtracks along the way.

Levels
There are twenty-one official levels in Geometry Dash. Completing levels rewards stars and additionally secret coins by collecting the three hidden within each level.

Update 2

Other features
Geometry Dash includes a number of features such as:
 * A practice mode to learn the layout of levels.
 * Achievements with a variety of rewards.
 * An Icon Kit providing many customisation options.
 * A level editor to create and share custom levels.
 * Map packs and level downloads.
 * Global leaderboards.
 * A hidden Vault...
 * User account functionality for secure data backup.
 * Settings for stable gameplay.
 * Everyplay support.

Trivia
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 * The original name of Geometry Dash during its beta phase was Geometry Jump.
 * The Geometry Dash Menu Theme was composed by Robert Topala himself under his Newgrounds alias Zhenmuron.
 * Geometry Dash shares many similar elements with The Impossible Game, a game with the same style of gameplay.
 * A wild RubRub appeared!
 * Back for more are ya?
 * Build your own levels using the level editor
 * Calculating chance of success
 * Can you beat them all?
 * Collecting scrap metal
 * Counting to 1337
 * Does anyone even read this?
 * Drawing pretty pictures
 * Fake spikes are fake
 * Fus Ro DASH!
 * Go online to play other player's levels!
 * Here be dragons...
 * Hiding rocket launcher
 * Hiding secret Vault
 * Hiding secrets
 * Hold down to keep jumping
 * Hold on, reading the manual
 * Hope the big guy doesn't wake up...
 * hsaD yrtemoeG
 * I don't know how this works...
 * If at first you don't succeed, try, try again...
 * I have been expecting you.
 * It's all in the timing
 * It's Over 9000!
 * Listen to the music to help time your jumps
 * Loading awesome soundtracks...
 * Loading Rage Cannon
 * Loading the progressbar
 * Loading will be finished... soon
 * Looking for pixels
 * Only one button required to crash
 * Play, Crash, Rage, Quit, Repeat
 * Programmer is sleeping, please wait
 * Programming amazing AI
 * Pro tip: Don't crash
 * Pro tip: Jump
 * RobTop is love, RobTop is life
 * RubRub was here
 * Shhhhh! You're gonna wake the big one!
 * So many secrets...
 * So, what's up?
 * Spikes are not your friends, don't forget to jump
 * Spikes... OF DOOM!
 * Spooky doesn't get out much
 * Starting the flux capacitor
 * Such wow, Very amaze.
 * The spikes whisper to me...
 * The Vault Keeper's name is "Spooky"
 * This seems like a good place to hide a secret...
 * Waiting for planets to align
 * Wandering around aimlessly
 * Warp Speed
 * What if the spikes are the good guys?
 * Where did I put that coin...
 * Why don't you go outside?
 * Why U have to be mad?
 * Unlock new icons and colors by completing achievements!
 * Use Practice Mode to learn the layout of a level
 * You can download all the songs from the Level Select page!

Update log (iOS)
The following table contains the official update information provided by the iOS App Store, only omitting secondary information (such as support notices). Select an update to read more about it.