Live Steam player count comparison, updated every 10 minutes. Both are Action games.
Killing Floor 2 is currently the more played game: 4,072 concurrent players on Steam right now vs 0 for Portal 2 — far more players. Portal 2 counters with better Steam reviews: 99% positive vs 88%. Across all tracked metrics, Killing Floor 2 leads 5 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 | Killing Floor 2 | Portal 2 |
|---|---|---|
| Players right now | 4,072 | 0 |
| 24-hour peak | 4,685 | 2,694 |
| 7-day average | 3,476 | 1,910 |
| 30-day average | 3,476 | 2,116 |
| 30-day trend | — | +50% |
| Peak (tracked) | 4,685 | 3,960 |
| Steam reviews | 88% positive | 99% positive |
| Recent reviews (3 mo) | 84% positive | 98% positive |
| Total reviews | 129,108 | 463,359 |
| Owners (SteamSpy est.) | ~2,000,000 | ~5,000,000 |
| Release date | Nov 18, 2016 | Apr 17, 2011 |
| Price | $29.99 | $9.99 |
Full stats: Killing Floor 2 · Portal 2 · add more games to this comparison →
| Month | Killing Floor 2 | Portal 2 | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| Apr 2026 | — | — | 1,328 | 1,743 |
| May 2026 | — | — | 1,329 | 1,986 |
| Jun 2026 | — | — | 1,659 | 3,790 |
| Jul 2026 (so far) | 3,522 | 4,685 | 2,275 | 3,960 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
Killing Floor 2 currently has more players: 4,072 concurrent players on Steam vs 0 for Portal 2 — far more players.
Over the last 30 days Killing Floor 2 averaged 3,476 concurrent players and Portal 2 averaged 2,116. By that measure Killing Floor 2 is currently the bigger game.
By Steam review score, Portal 2 rates higher: 99% positive across 463,359 reviews vs 88% across 129,108 for Killing Floor 2. Killing Floor 2 has the larger player base right now (4,072 vs 0 concurrent). Player counts, ratings, price and trend are compared side by side above.
Portal 2 averaged 2,116 concurrent players over the last 30 days, up 50% vs the previous 30 days. Its highest tracked player count is 3,960.