
- BGG rank
- BGG #10,341
- BGG rating
- 5.9
Undo: Cherry Blossom Festival
- 2–6 players
- 45–90 min
- Complexity 1.2/5
- 2019

2019
Rules assistance for Undo: Forbidden Knowledge
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.
Undo: Forbidden Knowledge is a board game released in 2019 for 2–6 players, 45–90 minutes per game, and ages 10 and up. It was designed by Michael Palm and Lukas Zach and its main mechanics are Deduction, Storytelling, and Cooperative Game.
Time heals all wounds, they say, but the sudden death of a loved one sometimes shakes those who are left behind so much that their faith wavers. To prevent this, the gods send fate weavers to change the past and prevent death. In the game series UNDO, players slip into the role of these destiny weavers and do everything in their power to undo sudden deaths — whether murder or suicide. Not only do they travel minutes or hours back in time, but sometimes thousands of years to change events that have laid the foundation for the later stroke of fate. Sometimes a leap into the future can also provide important information. The UNDO series combines the theme of time travel with emotional, extraordinary stories that players must assemble piece by piece. Each time jump gives them another choice in how they can change the past — and not every change is a turn for the better! In UNDO: Forbidden Knowledge, tragedy strikes on a graveyard in a swamp, in 1923’s City of Arkham: A man, standing by an open crypt, realizes the existence of something so terrifying that, in shock, he suffers an immediate cardiac arrest. Set in the mythical world of H.P. Lovecraft, players of this UNDO case are bound to cross paths with otherworldly horrors. A cemetery in the swamp, July 1923: A man is his twenties is standing next to an open crypt, a horrified expression on his face. Next to him are a backpack, a spade, and a portable telephone, the wire of which leads down the stairs into the darkness. "Get out! Push back the grave slab and RUN!" cries a panicked voice through the receiver. "I can't leave you, Harley," the man answers in a trembling voice, "Harley, can you hear me?" A crackling noise from the receiver makes him pause — then a hollow, gelatinous, disembodied voice echoes through the receiver: "YOU FOOL, HARLEY IS DEAD." The man begins laughing hysterically. To protect his sanity, his heart stops, and he drops dead...
Undo: Forbidden Knowledge 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 Undo: Forbidden Knowledge is 45–90 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 Undo: Forbidden Knowledge 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.
Undo: Forbidden Knowledge has a complexity rating of 1.1 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.
Undo: Forbidden Knowledge belongs to these categories: Card Game, Deduction, and Murder / Mystery. Its main mechanics are Deduction, Storytelling, and Cooperative 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 Undo: Forbidden Knowledge are: Michael Palm and Lukas Zach. 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 Undo: Forbidden Knowledge 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.