140 is a platform game independently developed by Jeppe Carlsen, known for his gameplay direction for Playdead's Limbo. The game is described as a "minimalistic platformer", using electronic music to create synesthesia as the player manipulates their avatar, a character that can take on several basic geometric shapes, through levels in time to the music. The gameplay has been compared to other similar games which involve music synchronization like Sound Shapes and the Bit.Trip series, though with difficult platforming elements comparable to games in the Mega Man series. The game was released in October 2013. As described by Carlsen, 140 is "an old school platformer", but where the challenge is "in syncing up your moves and jumps to the music-controlled elements"; as the player progresses through a level, the music will change reflecting the difficulty of the platforming elements. The player controls a geometric shape - a square when stationary, a circle when moving, and a triangle when...