Child of Eden is a 2011 musical rail shooter game developed by Q Entertainment and published by Ubisoft for Xbox 360 and PlayStation 3. Following the player's journey to purge a far-future internet of viruses, the gameplay features shooting numerous enemies from a first-person perspective, with scores based on performance and bonuses awarded for syncing groups of shots with each stage's musical track. In addition to standard controllers, each version has the option to use motion controls through the Kinect and PlayStation Move respectively. It is a spiritual successor to the 2001 title Rez, carrying over the aim of producing a feeling of synesthesia in players.

Rez is a musical rail shooter game developed by United Game Artists and published by Sega for the Dreamcast and PlayStation 2. It was released in Japan in 2001, followed by releases to the United States and Europe in 2002. The game was ported to Xbox 360 as Rez HD by Q Entertainment and HexaDrive in 2008. A virtual reality-compatible expanded version dubbed Rez Infinite was co-developed and released through 2016 to 2023 by Enhance Games, Resonair and Monstars for PlayStation 4, Windows, Android, Oculus Quest and PlayStation 5.