Live Steam player count comparison, updated every 10 minutes. Both are Simulation games.
Oxygen Not Included is currently the more played game: 12,923 concurrent players on Steam right now vs 8,921 for Cities: Skylines — about 45% more players. Oxygen Not Included also has the better Steam reviews: 97% positive vs 93%. Across all tracked metrics, Oxygen Not Included leads 7 of 9.
Coilr tracks charts like this for every game — and playtime history for your own library.
Tracked by Coilr since April 2026 · Steam polled every 10 minutes · methodology
| Metric | Cities: Skylines | Oxygen Not Included |
|---|---|---|
| Players right now | 8,921 | 12,923 |
| 24-hour peak | 12,430 | 17,869 |
| 7-day average | 7,649 | 11,487 |
| 30-day average | 8,334 | 11,487 |
| 30-day trend | +5% | — |
| Peak (tracked) | 14,280 | 17,869 |
| Steam reviews | 93% positive | 97% positive |
| Recent reviews (3 mo) | 92% positive | 95% positive |
| Total reviews | 290,480 | 142,647 |
| Owners (SteamSpy est.) | ~10,000,000 | ~2,000,000 |
| Release date | Mar 9, 2015 | Jul 30, 2019 |
| Price | $29.99 | $24.99 |
Full stats: Cities: Skylines · Oxygen Not Included · add more games to this comparison →
| Month | Cities: Skylines | Oxygen Not Included | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| Apr 2026 | 6,993 | 9,026 | — | — |
| May 2026 | 7,520 | 12,056 | — | — |
| Jun 2026 | 8,305 | 14,280 | — | — |
| Jul 2026 (so far) | 7,993 | 13,440 | 11,380 | 17,869 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
Oxygen Not Included currently has more players: 12,923 concurrent players on Steam vs 8,921 for Cities: Skylines — about 45% more players.
Over the last 30 days Cities: Skylines averaged 8,334 concurrent players and Oxygen Not Included averaged 11,487. By that measure Oxygen Not Included is currently the bigger game.
By Steam review score, Oxygen Not Included rates higher: 97% positive across 142,647 reviews vs 93% across 290,480 for Cities: Skylines. Oxygen Not Included has the larger player base right now (12,923 vs 8,921 concurrent). Player counts, ratings, price and trend are compared side by side above.
Cities: Skylines averaged 8,334 concurrent players over the last 30 days, up 5% vs the previous 30 days. Its highest tracked player count is 14,280.