
- BGG rank
- BGG #11,306
- BGG rating
- 6.5
Star Trek Chrono-Trek
- 2–6 players
- 15–45 min
- Complexity 2.3/5
- 2019

Rules assistance for Chrononauts: Carl Sagan's Joint
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
Chrononauts: Carl Sagan's Joint is an expansion for Chrononauts released in 2004 for 1–6 players, 30–60 minutes per game, and ages 11 and up. It was designed by Andrew Looney and its main mechanics are Hand Management, Push Your Luck, and Modular Board.
This is a one-card expansion. From the Looney Labs website: This special Artifact works in either type of Chrononauts deck. It debuted as a promo card for the Summer Festivals of 2004. The text on the card says, "At any time during your normal turn, if you have this Artifact in play, you may (as an extra action) swap it with any Artifact or Gadget another player has on the table."
Chrononauts: Carl Sagan's Joint 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 Chrononauts: Carl Sagan's Joint is 30–60 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 Chrononauts: Carl Sagan's Joint for ages 11 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.
Chrononauts: Carl Sagan's Joint belongs to these categories: Card Game, Deduction, and Bluffing. Its main mechanics are Hand Management, Push Your Luck, and Modular Board. 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 credited designers of Chrononauts: Carl Sagan's Joint are: Andrew Looney. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Chrononauts: Carl Sagan's Joint as an expansion for Chrononauts. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Chrononauts to use it. Check that your edition of Chrononauts is compatible, as some expansions were revised between editions.