
- BGG rating
- 8.9
Chemical Overload: Entropy
- 1–4 players
- 45–75 min
- 2026

2025
Rules assistance for Chemical Overload
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 1 player

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Answers come from the official rulebook, with the page to check.
Chemical Overload is a board game released in 2025 for 1–4 players, 45–75 minutes per game, and ages 13 and up. It was designed by Michael Crandall and Katie Crandall and its main mechanics are Set Collection, Income, and Open Drafting.
In Chemical Overload, the current Master Alchemist is set to retire, but has been preparing for this by training his apprentices for years. Sure, the Academy of Alchemy has been pretty brutal so far, but the end of the road is near. The final exam is going to be rough, but it’ll be worth it, if you manage to rise above your fellow students and win the title of Master Alchemist! At the end of the final exam, you’ll be judged on the quality of your potions, which can be measured by how many Alchemy Points you’ve managed to accrue. Do this before the lab fills up with too many toxic fumes and the exam is called to a halt. You and your fellow students will start with the same basic chemicals and flasks. You’ll be combining your chemicals with the flasks of the correct size to brew magical potions. Each potion has its own effects and Alchemy Point values, and you’ll be able to use those potion’s effects throughout the game to help you gain more gold, alchemy points, more powerful chemicals, or even more powerful potions! But some potions will also add to the amount of toxic fumes in the lab! There are several thresholds, that once passed, you’ll have to draw a toxin card and deal with those effects. So you’ll want to keep an eye on that track, because once the tracker hits the end of the meter, the test is over! At the end of the final exam, the alchemist with the most Alchemy Points wins and is crowned the Master Alchemist! Chemical Overload is a Deck Building game that has elements of tableau building as well. On your turn, you’ll have a hand of cards. Any flask cards in your hand can be played to the table and remain there until used to brew a potion. There are also potions that can be played to the table for ongoing effects. As a bit of a twist on a classic deck building game, when a player gains new cards, such as new chemicals or a newly brewed deck potion, those cards go right on top of their draw pile. Any flasks or table potions gained can be placed immediately in the players tableau area. Players will be able to decide what unused cards in their hand they want to keep at the end of the round and which they want to discard, all with an eye on the cards they know they’ll be drawing next turn. Chemical Overload is for 1-4 players and takes about 45-60 minutes to play. —description from the publisher
Chemical Overload supports 1–4 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 Chemical Overload is 45–75 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 Chemical Overload for ages 13 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.
Chemical Overload has a complexity rating of 2.4 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.
Chemical Overload belongs to these categories: Card Game and Fantasy. Its main mechanics are Set Collection, Income, and Open Drafting. 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 Chemical Overload are: Michael Crandall and Katie Crandall. 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 Chemical Overload 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.