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.

| Poll | Players |
|---|---|
| 06:05 UTC | 2 |
| 00:04 UTC | 2 |
| 24 Oct, 17:36 UTC | 2 |
| 24 Oct, 11:35 UTC | 2 |
| 24 Oct, 10:19 UTC | 2 |
Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| October 2026Oct 2026 (so far) | 2 | — | — | 2 |
Average and peak concurrent players each month, and the change in average players from the month before.