
- BGG rank
- BGG #21,885
- BGG rating
- 6.1
Featherweight Fiesta
- 2–4 players
- 20–30 min
- Complexity 1.0/5
- 2023

2024
Rules assistance for In Extremis
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

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Answers come from the official rulebook, with the page to check.
In Extremis is a board game released in 2024 for 2–6 players, 12–30 minutes per game, and ages 10 and up. It was designed by Juan Rodriguez and Julien Prothière and its main mechanics are Cooperative Game and Scenario / Mission / Campaign Game.
Welcome to our lab! For decades now, we the scientists of Giete (Groupement Intergouvernemental d'Experts sur la Transition Énergétique), have been feeding the world governments with data on an environmental situation that has only gotten worse. Faced with constant inaction from our heads of state and major corporations, and despite the urgency of the situation, we have allocated part of our meagre budget to the development of artificial intelligence (A.I.). Like a digital hummingbird, this A.I. will gather the results of experiments carried out by volunteers, feeding the algorism with their trials, their behaviors and their initiatives. Little by little, it will experiment with them different social and political systems, each of which may be able to provide part of the solution. And finally, your participation will provide data on the urgent decisions that need to be made. Each of the 16 Experiments will lead you to use the resources available in a given area to meet the population's energy needs, within a limited timeframe and under a defined system. Happy experimenting! A game full of Science! The game also comes with a 68-page book ("Avant d'éteindre la lumière…") which is not a manual on energy transition, but rather a companion document to the game. Written by energy expert Pascal Lenormand, it explains why the A.I. asks players to perform abstract actions, and draws parallels with the real-life systems behind them. Cooperative and evolutionary! Cooperative: you'll win or lose together. Either way, you're going to gain a special human moment! Evolutive: depending on the experiments you play, you'll need to adapt the rules and the cards you use. Be prepared: this is a game where you'll need to learn, unlearn and relearn a lot! Your goal Each Experience consists of 3 rounds. Round 3 features an optimized test with a special rule. To win a game, you need to win all 3 rounds. If you win all 16 experiments... something will happen. On the other hand, you lose immediately at the end of a round if you fail to meet a population's energy needs or pollute more than is sustainable. Note: The game requires a free application to be downloaded from the App Store or Google Play. Once downloaded, an internet connection is not required for gameplay.
In Extremis 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 In Extremis is 12–30 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 In Extremis for ages 10 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.
In Extremis has a complexity rating of 1.7 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.
In Extremis belongs to these categories: Card Game and Environmental. Its main mechanics are Cooperative Game and Scenario / Mission / Campaign 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 credited designers of In Extremis are: Juan Rodriguez and Julien Prothière. 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 In Extremis 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.