
- BGG rating
- 6.6
Entropy: Worlds Collide – Echo of Time
- 2–5 players
- 15–45 min
- 2017

2017
Rules assistance for Entropy: Worlds Collide
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 2 players

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Answers come from the official rulebook, with the page to check.
Entropy: Worlds Collide is a board game released in 2017 for 2–4 players, 15–40 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: Worlds Collide is a competitive card game of risk, deception and action management for 2 to 4 players. The game is a remake of its predecessor, Entropy. Multiple parallel worlds have collided and you play as one of six characters jettisoned from their world into a place called the Nexus. Each character's world has been shattered into four separate shards that when pieced together forms a complete panoramic vista of their world. Through the use of unique character abilities and special actions, players must find shards of their reality and be the first to piece them back together in order to save their world and return home. Each turn, players select a single action from the six they have available, keeping it hidden from their opponents. All players then reveal their chosen action at the same time. Playing the best action at the right time won't be easy. Should two or more players select the same action, a "Clash" occurs and none of those players will be able to perform their action. Take risks, deceive and outwit your opponents to save your world, and earn your right to return home.
Entropy: Worlds Collide supports 2–4 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: Worlds Collide is 15–40 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: Worlds Collide 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: Worlds Collide has a complexity rating of 2.3 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.
Entropy: Worlds Collide 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: Worlds Collide 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: Worlds Collide 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.