O2Mania was developed as part of a movement to preserve rhythm games after official server shutdowns. It is often bundled with "Music Packs" containing thousands of legacy songs from the original game’s decade-long history.
O2Mania is a simulator for O2Jam (the rhythm game), allowing you to play .OJM (music) and .OJM + .OJN (note charts) files offline. o2mania english 1.4.2
: Plays standard OJN/OJM (O2Jam) files, as well as BMS (Be-Music Source) and DJMAX formats. O2Mania was developed as part of a movement