Room 40

Room 40 is a puzzle game about deciphering secret messages. You play as Amy, a recent college graduate struggling to find work, who discovers a mysterious letter containing a coded message. After she replies, a government agency recruits her as a code breaker in Room 40, an undisclosed location where code breakers work to uncover the meaning of secret messages.

Decode the messages

You solve 16 secret messages, with four bonus messages for an additional challenge. The game covers encryption methods from ancient Greece through to complex ciphers used in World War II. It introduces different types and forms of secret messages, and provides analytical tools and techniques to help reveal their meaning.