
- BGG rank
- BGG #4,890
- BGG rating
- 7.6
EXIT: The Game – Advent Calendar: The Intergalactic Race
- 1–99 players
- 20–45 min
- Complexity 2.0/5
- 2024

2021
Rules assistance for Key Enigma: Calling Card
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 1 player

What would you like to know?
Answers come from the official rulebook, with the page to check.
Key Enigma: Calling Card is a board game released in 2021 for 1–6 players, 480–960 minutes per game, and ages 14 and up. Its main mechanics are Deduction, Storytelling, and Cooperative Game.
Calling Card is an escape game that mixes puzzles, narrative, and technology to immerse you. A box full of mysteries and enigmas. With the materials, codes, and clues hidden inside, you must use your ingenuity and match the objects to solve the case. In this new adventure, you will have to put all your deductive and investigative skills to the test because what seemed like an average case has become a twisted game. Your role will be to stop and unmask the terrible plans of a distinguished psychopath master of manipulation and specialist in the deepest and darkest instincts that guide the actions of the human being. Who is behind all this? Puzzles in which you will have to consult and review the different clues and inconsistencies between the suspects, investigate old cases, compare different publications or objects and find the necessary evidence to solve the crimes committed... or prevent them from being committed. If we manage to reach certain stretch goals, we can add more complex, sophisticated puzzles, which could include magnets, embarking on missions in the real world, receiving phone calls, and higher quality components to get a more realistic and stunning experience, among other amazing surprises.
Key Enigma: Calling Card supports 1–6 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Key Enigma: Calling Card is 480–960 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Key Enigma: Calling Card for ages 14 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Key Enigma: Calling Card has a complexity rating of 2.0 out of 5 from BoardGameGeek players, which makes it a medium-light game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
Key Enigma: Calling Card belongs to these categories: Deduction, Murder / Mystery, and Exploration. Its main mechanics are Deduction, Storytelling, and Cooperative Game. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The catalogue lists Key Enigma: Calling Card as a base game. It can be played on its own with the components in the box and does not require any other title. Expansions, if any exist, add new content or rules on top of it and are listed separately in the catalogue with a link back to this base game.