
- BGG rank
- BGG #8,285
- BGG rating
- 7.2
Signal
- 2–6 players
- 10–20 min
- Complexity 2.0/5
- 2025

2020
Rules assistance for Rosetta: The Lost Language
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.
Rosetta: The Lost Language is a board game released in 2020 for 2–5 players, 25 minutes per game, and ages 8 and up. It was designed by Jono Naito-Tetro and its main mechanics are Cooperative Game, Pattern Recognition, and Induction.
Rosetta: The Lost Language is a co-operative judgement game for two or more players. In the game, players take on the role of experts who try to understand the written language of the author, a player who represents a lost individual, community, or civilization. The author assigns meaning to an inscription that is written in a fictional script, and the experts must figure out what that meaning is. The experts choose a word as a guess, and the author translates it into the given script, informing their understanding of the writing system. This goes back and forth until the experts give a word that is translated into the original inscription. The number of guesses represents a score, with players seeking the lowest score possible.
Rosetta: The Lost Language supports 2–5 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 Rosetta: The Lost Language is 25 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 Rosetta: The Lost Language for ages 8 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.
Rosetta: The Lost Language has a complexity rating of 2.0 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.
Rosetta: The Lost Language belongs to these categories: Card Game, Print & Play, and Deduction. Its main mechanics are Cooperative Game, Pattern Recognition, and Induction. 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 Rosetta: The Lost Language are: Jono Naito-Tetro. 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 Rosetta: The Lost Language 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.