Live Steam player count comparison, updated every 10 minutes. Both are Indie / Simulation games.
Prison Architect is currently the more played game: 861 concurrent players on Steam right now vs 743 for One-armed robber — about 16% more players. One-armed robber counters with better Steam reviews: 91% positive vs 89%. One-armed robber is free to play, while Prison Architect costs $7.49 (−75%). Across all tracked metrics, Prison Architect leads 5 of 9.
Coilr tracks charts like this for every game — and playtime history for your own library.
Tracked by Coilr since June 2026 · Steam polled every 10 minutes · methodology
| Metric | One-armed robber | Prison Architect |
|---|---|---|
| Players right now | 743 | 861 |
| 24-hour peak | 1,452 | 1,450 |
| 7-day average | 984 | 1,070 |
| 30-day average | 984 | 1,066 |
| 30-day trend | — | — |
| Peak (tracked) | 1,452 | 1,450 |
| Steam reviews | 91% positive | 89% positive |
| Recent reviews (3 mo) | 91% positive | 85% positive |
| Total reviews | 51,431 | 73,561 |
| Owners (SteamSpy est.) | ~2,000,000 | ~5,000,000 |
| Release date | Dec 15, 2023 | Oct 6, 2015 |
| Price | Free to play | $7.49 (−75%) |
Full stats: One-armed robber · Prison Architect · add more games to this comparison →
| Month | One-armed robber | Prison Architect | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| Jun 2026 | — | — | 708 | 726 |
| Jul 2026 (so far) | 1,000 | 1,452 | 1,058 | 1,450 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
Prison Architect currently has more players: 861 concurrent players on Steam vs 743 for One-armed robber — about 16% more players.
Over the last 30 days One-armed robber averaged 984 concurrent players and Prison Architect averaged 1,066. By that measure Prison Architect is currently the bigger game.
By Steam review score, One-armed robber rates higher: 91% positive across 51,431 reviews vs 89% across 73,561 for Prison Architect. Prison Architect has the larger player base right now (861 vs 743 concurrent). Player counts, ratings, price and trend are compared side by side above.