The Game Census
Room 40 cover art

Room 40

Silhouette Valley Games · 2019-07-31

Steam

Free To PlayIndie

Modes: Single player

Releases: Jul 31, 2019 (PC (Microsoft Windows))

Room 40 is a puzzle game about learning to decipher and decode secret messages. Learn to break various methods of encryption used throughout history. Starting with basic methods used in ancient Greece and the advancement of these methods all the way through to complex ciphers used in WWII.

1
playing now
75%
positive of 106 reviews
Mostly Positive
steam rating
20,000–50,000
owners (SteamSpy est.)
pending
deck/linux tier (ProtonDB)
Free
steam price (US)

1 players in-game as of 2026-08-30 13:00 UTC (census sample)

Health check

Insufficient data
  • · Not enough review history collected yet to judge health.
  • · Top 62% of 3,022 Free To Play games in the census by review count.

Players online

202026-08-12 03:00 — 0 players2026-08-12 19:00 — 1 players2026-08-13 11:00 — 0 players2026-08-14 03:00 — 0 players2026-08-14 19:00 — 0 players2026-08-15 11:00 — 0 players2026-08-16 03:00 — 0 players2026-08-16 18:00 — 0 players2026-08-17 10:00 — 0 players2026-08-18 02:00 — 0 players2026-08-18 18:00 — 0 players2026-08-19 10:00 — 0 players2026-08-20 01:00 — 0 players2026-08-20 17:00 — 0 players2026-08-21 09:00 — 1 players2026-08-22 01:00 — 0 players2026-08-22 16:00 — 0 players2026-08-23 08:00 — 0 players2026-08-24 00:00 — 1 players2026-08-24 16:00 — 0 players2026-08-25 08:00 — 0 players2026-08-26 00:00 — 2 players2026-08-26 16:00 — 0 players2026-08-27 08:00 — 0 players2026-08-28 00:00 — 0 players2026-08-28 16:00 — 0 players2026-08-29 08:00 — 0 players2026-08-30 13:00 — 1 players
Concurrent players, hourly average, last 30 days (census samples).

Details

WindowsSingle-playerSteam AchievementsFamily Sharing

1 supported languages: English

Player tags

2DCuteIndieCasualPuzzleFree to PlaySingleplayerFemale Protagonist

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Supreme Ruler UltimateBronze Age - HD EditionTech Support: Error UnknownRogue HeistApsulov: End of Gods

Similarity via IGDB.

Official site ↗