
- BGG rating
- 8.8
Sidereal Confluence: Bifurcation
- 4–9 players
- 120–180 min
- Complexity 4.0/5
- 2022

2017
Rules assistance for Sidereal Confluence
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 4 players

What would you like to know?
Answers come from the official rulebook, with the page to check.
Sidereal Confluence is a board game released in 2017 for 4–9 players, 120–180 minutes per game, and ages 14 and up. It was designed by TauCeti Deichmann and its main mechanics are Variable Player Powers, Trading, and Income.
Sidereal Confluence: Trading and Negotiation in the Elysian Quadrant is a singularly unique trading and negotiation game for 4-9 players. Over the course of the game, each race must trade and negotiate with the rest to acquire the resource cubes necessary to fund their economy and allow it to produce goods for the next turn. Scheming, dealing, and mutually beneficial agreements are key to success. While technically a competitive game, Sidereal Confluence has a cooperative feel during the trading phase as no race has the ability to thrive on its own. Trade well, and you'll develop technologies and colonize planets to form a civilization that is the envy of the galaxy. Each player chooses one of the nine unique and asymmetrical alien races that have come together to form a trade federation in their quadrant. Each race has its own deck of cards representing all the existing and future technologies it might research. Some races also have other cards related to unique features of their culture. These cards represent portions of the culture's economy and require spending some number of cubes to use, resulting in an output of more cubes, ships, and possibly victory points. Since each culture's outputs rarely match their inputs, players need to trade goods with one another to run their converters to create the resources they truly need to run their society most efficiently and have an effective economy. Almost everything is negotiable, including colonies, ships, and all kinds of resources. Each game round contains an open trading phase in which all players can negotiate and execute deals for cubes, ships, colonies, even the temporary use of technologies! Players with enough resources can also research technologies, upgrade colonies, and spend resources on their race's special cards during this phase. Once complete, all players simultaneously run their economies, spending resources to gain more resources. The Confluence follows, starting with players sharing newly researched technologies with all other races and following with bidding to acquire new colonies and research teams. Researching a new technology grants many victory points for the prestige of helping galactic society advance. When one race builds a new technology, it is shared with everyone else. Technologies can be upgraded when combined with other technologies. The ultimate goal is victory points, which are acquired by researching technologies, using your economy to convert resources to goods, and converting your leftover goods into points at the end of the game. The game is almost all simultaneous play. Sidereal Confluence: Remastered Edition features the same gameplay as the first edition of the game from 2017, but features an updated card layout, a teaching guide, and an improved rulebook for easy set-up and learning with more visual examples and clear key terms.
Sidereal Confluence supports 4–9 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 Sidereal Confluence is 120–180 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 Sidereal Confluence 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.
Sidereal Confluence has a complexity rating of 3.6 out of 5 from BoardGameGeek players, which makes it a medium-weight 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.
Sidereal Confluence belongs to these categories: Economic, Real-time, and Negotiation. Its main mechanics are Variable Player Powers, Trading, and Income. 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 Sidereal Confluence are: TauCeti Deichmann. 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 Sidereal Confluence 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.