One Room Nightmare is tracked on SteamScope with live Steam concurrent player data, historical charts, and a SteamScope activity score of 42/100. Search for "One Room Nightmare player count" or "One Room Nightmare steam charts" to monitor how many people are playing right now and how activity compares with past peaks.

One Room Nightmare is developed by RenKon, released 7 Jun 2024, a Indie, Simulation, Strategy, Free To Play title. Available on Windows.

One Room Nightmare currently reports 1 concurrent Steam players with a 24-hour peak of 1 and an all-time peak of 1.

Among tracked Steam titles, One Room Nightmare ranks #16455 of 17,244 by momentum score.

One Room Nightmare has lost momentum recently. Retention sits at 100/100, suggesting fewer players relative to its all-time peak of 1.

One Room Nightmare has 7 Steam achievements tracked on SteamScope.

The average global unlock rate across all achievements is 16%, giving a baseline for overall completion difficulty.

The most common achievement is "The Beginning of a Nightmare" with a 76.5% unlock rate.

The rarest achievement is "Survey completed: Ghost" — only 4.1% of players have unlocked it (Very Hard).