8 test subjects are trapped in a sealed building, controlled by a mysterious system. Each has a hidden codename that determines both their win condition and threat level. Complete tasks to gain clues and eliminate others by deducing their codename. Uncover your own, or survive to the end to escape.

| Month | Peak | Average | Polls |
|---|---|---|---|
| November 2026 | 1 | 1 | 2 |
| October 2026 | 2 | 1 | 40 |
| August 2026 | 25 | 2 | Archive |
Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
The average and peak number of people in the game on Steam in each calendar month before our own collection began. These figures come from a licensed historical archive, not from our own polls.
Source: Licensed historical archive, Monthly player history. Full methodology
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| November 2026Nov 2026 (so far) | 1 | 0 | −28.6% | 1 |
| October 2026Oct 2026 (from 24 Oct) | 1 | — | — | 2 |
| August 2026Aug 2026 | 2 | — | — | 25 |
Average and peak concurrent players each month, and the change in average players from the month before. Months before October 2026 are from a licensed historical archive.