Phase is played in a forced single-point perspective view of a three line track.

Additionally, there are occasional series of smaller, more closely spaced dots that will sweep across the track.

After completing a marathon with the Hard difficulty setting, Expert mode is made available.

Custom songs must be added to a Phase playlist in iTunes, where they are processed for proper interpretation and become available in the game.

The songs included in the game are: "Nightlife Commando" by Bang Camaro, "Pop Music Is Not a Crime" by Freezepop, "Midnight Gamma" by Inter:sect, "Spira Mirabilis" by Kodomo, "The Theme of the Awesome" by Speck, "Dragonfly Remix" by Universal Hall Pass, and "Dots and Dashes" by Dealership.