Black Book
Playing now
21+4 vs. yesterday
1.2%of peak
All-time peak
Steam charts
Playing now
21+4
24-hour peak
45
All-time peak
1,817Aug 2021
30-day average
31
Rank right now
#6,110
Updated Data by
Aug 2021
| Month | Average | Gain | % Gain | Peak |
|---|---|---|---|---|
| Sept 2026 | 31 | −2 | −4.8% | 66 |
| Aug 2026 | 33 | −3 | −9.3% | 88 |
| Jul 2026 | 36 | −2 | −4.8% | 95 |
| Jun 2026 | 38 | +5 | +13.9% | 113 |
| May 2026 | 33 | −3 | −8.9% | 97 |
| Apr 2026 | 36 | −13 | −25.9% | 92 |
| Mar 2026 | 49 | −4 | −8.1% | 142 |
| Feb 2026 | 53 | −3 | −6.1% | 200 |
| Jan 2026 | 56 | +22 | +63.8% | 139 |
| Dec 2025 | 34 | −4 | −11.1% | 87 |
| Nov 2025 | 38 | +0 | +0.2% | 89 |
| Oct 2025 | 38 | — | — | 103 |
| Milestone | Black Book | Genre median |
|---|---|---|
| Launch peak | — | — |
| Hour 1 | — | — |
| Hour 24 | — | — |
| Hour 72 | — | — |
| Day 7 | — | — |
| Now | 21 | — |
| Daily peak · last 14 days | Peak | |
|---|---|---|
| Sat 5 Sept · weekend | 65 | |
| Sun 6 Sept · weekend | 65 | |
| Mon 7 Sept | 66 | |
| Tue 8 Sept | 56 | |
| Wed 9 Sept | 47 | |
| Thu 10 Sept | 39 | |
| Fri 11 Sept | 45 | |
| Sat 12 Sept · weekend | 45 |
Every figure here is derived, shown as a range, and links to its method. Steam does not publish owner counts.
| Source | Estimated owners | Method | Confidence |
|---|---|---|---|
| SteamPeaks | 82,389 – 824,151 | Reviews × k, calibrated on 356 announced figures · How it works | High |