O2Jam : The Beginning is the official PC version based on O2Jam - Music & Game, featuring the entire series collection. Enjoy legendary original tracks, overwhelming note impact, and various key modes! From nostalgic classics to new hits, experience the authentic rhythm action of O2Jam.

| Poll | Players |
|---|---|
| 16:24 UTC | 10 |
| 12:23 UTC | 7 |
| 08:21 UTC | 10 |
| 06:46 UTC | 7 |
| 02:45 UTC | 4 |
| 5 Nov, 22:45 UTC | 2 |
| 5 Nov, 18:44 UTC | 4 |
| 5 Nov, 14:42 UTC | 12 |
| 5 Nov, 10:42 UTC | 1 |
| 5 Nov, 06:40 UTC | 7 |
| 5 Nov, 02:39 UTC | 6 |
| 4 Nov, 22:39 UTC | 1 |
| 4 Nov, 18:38 UTC | 3 |
Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
'O2Jam : The Beginning' ver. 0.31 Update Notice (30 Oct 2026): Players peaked at 5.0× the week before's average. In the week after, players averaged 61% more than the week before.
| Update | Peak After | Change |
|---|---|---|
| [New Song Update] KAZ Pack — New Songs Added!6 Nov 2026 · week before: 6.8 of 7 days; 0.4 of 7 days so far | 10 (1.4×) | +29% |
| 'O2Jam : The Beginning' ver. 0.31 Update Notice30 Oct 2026 · week before: 6.6 of 7 days | 22 (5.0×) | +61% |
Average players over the 7 days before and after each update post, and the most at once in the week after. Updates since we started counting this game’s players. How we count
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| November 2026Nov 2026 (so far) | 6 | +1 | +9% | 15 |
| October 2026Oct 2026 (from 23 Oct) | 6 | +2 | +48% | 22 |
| September 2026Sept 2026 | 4 | −1 | −13.4% | 14 |
| August 2026Aug 2026 | 5 | 0 | −8.1% | 13 |
| July 2026Jul 2026 | 5 | — | — | 23 |
| May 2026May 2026 | 2 | — | — | 11 |
| March 2026Mar 2026 | 2 | — | — | 15 |
Average and peak concurrent players each month, and the change in average players from the month before. Months before October 2026 are from a licensed historical archive.