Cytus is a game of the same name that was released for the Android platform. In the game, you can tap on notes on the musical staff to play your own music.

The musical staff is made up of six horizontal lines, known as the "staff", and a number of vertical lines called "borders". Notes on the staff can be played in different octaves, or keys, and each note has a number associated with it. The note's name is displayed below the line where it is played.

The game has a number of modes, including:

• Single-player mode: the player is the only player and must play all the music by himself.
• Two-player mode: the player can choose to play with his friend.
• Multiplayer mode: up to four players can play at the same time.