Live Steam player count comparison, updated every 10 minutes. Both are Simulation games.
Fallout Shelter is currently the more played game: 1,830 concurrent players on Steam right now vs 1,123 for Prison Architect — about 1.6× more players. Fallout Shelter is free to play, while Prison Architect costs $7.49 (−75%). Across all tracked metrics, Fallout Shelter leads 6 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 | Fallout Shelter | Prison Architect |
|---|---|---|
| Players right now | 1,830 | 1,123 |
| 24-hour peak | 2,298 | 1,450 |
| 7-day average | 1,706 | 1,058 |
| 30-day average | 1,706 | 1,054 |
| 30-day trend | — | — |
| Peak (tracked) | 2,298 | 1,450 |
| Steam reviews | 88% positive | 89% positive |
| Recent reviews (3 mo) | 83% positive | 85% positive |
| Total reviews | 81,835 | 73,561 |
| Owners (SteamSpy est.) | ~2,000,000 | ~5,000,000 |
| Release date | Mar 29, 2017 | Oct 6, 2015 |
| Price | Free to play | $7.49 (−75%) |
Full stats: Fallout Shelter · Prison Architect · add more games to this comparison →
| Month | Fallout Shelter | Prison Architect | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| Jun 2026 | — | — | 708 | 726 |
| Jul 2026 (so far) | 1,720 | 2,298 | 1,050 | 1,450 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
Fallout Shelter currently has more players: 1,830 concurrent players on Steam vs 1,123 for Prison Architect — about 1.6× more players.
Over the last 30 days Fallout Shelter averaged 1,706 concurrent players and Prison Architect averaged 1,054. By that measure Fallout Shelter is currently the bigger game.
By Steam review score, Prison Architect rates higher: 89% positive across 73,561 reviews vs 88% across 81,835 for Fallout Shelter. Fallout Shelter has the larger player base right now (1,830 vs 1,123 concurrent). Player counts, ratings, price and trend are compared side by side above.