Dropchord is a motion controlled music-based puzzle video game using the Leap Motion controller. Players use two fingers to create two glowing spheres. Once the spheres are locked into place on the level's circular track, players must navigate a beam of light around a series of obstacles that appear within the circle, which threaten to interrupt the beam. Certain sections require the player to paint large portions of the circle with the beam, by flicking their finger around the perimeter. There are also nodes to collect which will increase the score. At the end of each song, the player is given more health. If the health bar goes above maximum level, the player is awarded a star and a new layer of health will start filling up. You lose a star once all of the health in a layer has been depleted, and you lose the game when all health has been depleted. The game will automatically end when the final song ends.
A mode called Full Mix allowed the player to play endlessly until their health ran out, but this mode is hard due to not giving any health at the end of each song.
Dropchord, initially called Radius, was principally designed and developed by Double Fine's Patrick Hackett and Drew Skillman, who previously worked together on Kinect Party. It was originally titled Radius, but was retitled Dropchord before its premiere at PAX East 2013.