The song "deltaMax" was originally written by DM Ashura for DDR Forever, a StepMania-based fan game for the Dance Dance Revolution series.

The song's inclusion in Universe 3 marks the first time a BEMANI original song originated from one of these BEMANI simulators.

Challenge Charts were included when the song was added to Dance Dance Revolution X2. These charts were created by DM Ashura himself and originally intended to be used in the Expert difficulty.