First BEMANI Appearance: jubeat knit APPEND
First DDR Appearance: DanceDanceRevolution X2
- DanceDanceRevolution II
- jubeat plus music pack 24
- jukebeat KONAMI music pack 15
- Theory of Eternity was available for play in jubeat knit APPEND by playing I'm so Happy on DanceDanceRevolution X2, and on DDR X2 after being played on jubeat knit APPEND, all as part of the jubeat knit APPEND FESTIVAL event.
- Theory of Eternity, along with I'm so Happy and ΔMAX's Challenge chart, cannot be played on a North American/European DanceDanceRevolution X2 cabinet. This is due to the songs being e-amusement exclusive unlocks. All three songs were brought over to the Wii release DDR II.
- Theory of Eternity is the only song from the APPEND FESTIVAL to appear on the Japanese DanceDanceRevolution X2 website.
- Theory of Eternity's album art has a circular shape on it as opposed to a triangular one in jubeat.
Official Song CommentEdit
Difficulty & NotecountsEdit
DanceDanceRevolution difficulty rated from 1 to 20.
|Game||SP Difficulty||DP Difficulty|
|Notecounts/Freeze Arrows(Shock Arrows)||132/0||228/12||317/9||419/6||275/12|