GAME VS GAME
Killing Floor 2 is more popular right now with 3,212 players on Steam, Operation: Outbreak (0). The highest all-time peak belongs to Killing Floor 2 (70,535 players).
Concurrent players on Steam. Drag or pinch to zoom; the table below has every number.
| Stat |  Killing Floor 2 |  Operation: Outbreak |
|---|---|---|
| Players right now | 3,212 | 0 |
| 24-hour peak | 3,569 | 0 |
| All-time peak | 70,535Jun 16, 2018 | 2Nov 4, 2026 |
| 30-day average players | 5,490 | n/a |
| Steam reviews | 88% positive87k reviews | n/a |
| Price now (US) | $29.99 | Free to play |
| Lowest price we have seen | $2.99 Oct 25, 2026 | Free |
| Twitch viewers now | 713 on average, 7 days | n/a |
| Release date | Feb 1, 2013 | Dec 20, 2025 |
Green marks the leader in each row (for prices, the cheaper game). Prices are US Steam prices.
Killing Floor 2Operation: OutbreakPick 2 to 4 games. Only games with a player count page can be compared.
Killing Floor 2 is more popular right now with 3,212 players on Steam, Operation: Outbreak (0). The highest all-time peak belongs to Killing Floor 2 (70,535 players).
Killing Floor 2 peaked at 70,535 concurrent players on June 16, 2018. Operation: Outbreak peaked at 2 concurrent players on November 4, 2026.
Killing Floor 2 costs $29.99 on the US Steam store, and the lowest price we have seen is $2.99. Operation: Outbreak is free to play.
Player counts updated 8 minutes ago.
RageQuit Charts is not affiliated with Valve Corporation. Steam and the Steam logo are trademarks of Valve Corporation. Player counts come from the official Steam Web API.
