O2mania -offline O2jam - All 556 Songs Included- Game [upd] Jun 2026

High-tempo, rhythm-heavy electronic re-imaginings of Mozart, Beethoven, and Bach.

Fire up O2Mania. Press F6 . And let the music become your oxygen once more.

This collection is a treasure trove of iconic tracks that defined the 2000s rhythm game scene. You'll find legendary originals like 'B.S.CAT', 'Adagio', and 'Amadeus', as well as a rich selection of classical music remixes, electronic dance music, and pop songs that were the staple of the online competitive scene. Many online archives and rhythm game communities dedicated time to curating and re-uploading these full song packs, ensuring that the 556-song library (and often much larger ones) remained available for new players and nostalgic veterans alike. O2Mania -Offline O2Jam - All 556 Songs Included- Game

Regarding the "Offline O2Jam - All 556 Songs Included" claim, I'd like to provide some context:

Overall, the massive song library in O2Mania (Offline O2Jam) is a significant feature that sets it apart from other music games, offering users a rich and engaging experience. And let the music become your oxygen once more

O2Mania is a lightweight, fan-made PC emulator designed specifically to play O2Jam files ( .ojn and .ojm ) completely offline.

O2Mania is an offline PC emulator and client for the legendary rhythm game Many online archives and rhythm game communities dedicated

The "All 556 Songs" version is a curated collection of O2Jam's most iconic tracks from various regional servers, including the Philippines and Malaysia. Classic Hits: Includes legendary tracks like Electro Fantasy Identity Part 4 Bach Alive Artist Diversity:

O2Mania is a labor of love from the rhythm game community. While the original commercial O2Jam may be gone, the notes continue to fall thanks to this offline client. For players who grew up memorizing the patterns of "Identitiy" or "Electro Fantasy," firing up this game is a wave of nostalgia.

It is impossible to discuss O2Mania without honoring the community that survived the death of the official servers. After O2Jam Online shut down, creators like "FZ" (the original O2Mania developer), and later contributors like "Mitsu" and "Sakura" (who continued the project to v1.4.2), ensured the software stayed compatible with new song formats.