
- BGG rank
- BGG #17,102
- BGG rating
- 6.6
The World Game
- 2–5 players
- 20–60 min
- Complexity 1.5/5
- 2018

2022
Rules assistance for Millimemory
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 1 player

What would you like to know?
Answers come from the official rulebook, with the page to check.
Millimemory is a board game released in 2022 for 1–6 players, 10–20 minutes per game, and ages 6 and up. Its main mechanics are Player Elimination and Memory.
How big is a golf ball? How long is a AA battery? How wide is a dollar bill? You've seen these things a thousand times, but could you size them up without a ruler? Millimemory / ミリメモリー is a quick, lively estimation game that tests how well you really know the everyday objects around you. Each round, a Question Card shows a familiar object and the dimension being measured: the diameter of a pool ball, the height of a soda can, the length of a crayon. All players secretly make their predictions at the same time by sliding a Prediction Card in or out of its sleeve until the exposed length matches their guess. No writing down numbers, no conversions; just what your eye and your memory tell you. Then flip the card to reveal the true measurement on the ruler printed on its back. Hold your Prediction Card against it and score based on how close you came.
Millimemory supports 1–6 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 Millimemory is 10–20 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 Millimemory for ages 6 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.
Millimemory has a complexity rating of 1.0 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.
Millimemory belongs to these categories: Card Game and Trivia. Its main mechanics are Player Elimination and Memory. 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 catalogue lists Millimemory 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.