
- BGG rating
- 6.3
Entropy: The Ronin expansion
- 2–6 players
- 15 min
- Complexity 1.5/5
- 2015

2015
Rules assistance for Entropy
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 2 players

What would you like to know?
Answers come from the official rulebook, with the page to check.
Entropy is a board game released in 2015 for 2–6 players, 15 minutes per game, and ages 12 and up. It was designed by Allen Chang and Alannah Kearney and its main mechanics are Variable Player Powers, Hand Management, and Simultaneous Action Selection.
Entropy is a competitive card game of risk, deception and action management for 2 to 6 players. Five parallel worlds have collided, forming a Nexus where time and space is folded unto itself. You play as one of five characters jettisoned from their world and into the Nexus. Through the use of unique character abilities and special actions, players must find fragments of their reality and be the first to piece them back together in order to find their way back home. Each turn players select an action card in secret. Once players are ready, they simultaneously reveal their selected card. Players then resolve the chosen action in order of the card's initiative, with a value of 1 going first. Should two or more players select the same action, a temporal clash occurs and players involved in the clash do not get to resolve their action. After four actions have been played, the game moves into a temporal reset phase. During this phase, all cards in the discard pile are shuffled back into the Nexus deck. Players then return played action cards back to their hand and a new round begins. The game continues until one player have revealed all four fragments from their character's reality.
Entropy supports 2–6 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 Entropy is 15 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 Entropy for ages 12 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.
Entropy has a complexity rating of 1.9 out of 5 from BoardGameGeek players, which makes it a 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.
Entropy belongs to these categories: Card Game, Deduction, and Bluffing. Its main mechanics are Variable Player Powers, Hand Management, and Simultaneous Action Selection. 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 Entropy are: Allen Chang and Alannah Kearney. 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 Entropy 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.