
- BGG rank
- BGG #14,575
- BGG rating
- 6.9
King's Valley
- 2 players
- 5 min
- Complexity 1.0/5
- 2006

2016
Rules assistance for KOZO
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.
KOZO is a board game released in 2016 for 2–6 players, 15–30 minutes per game, and ages 8 and up. It was designed by Mitsuo Yamamoto and its main mechanics are Tile Placement, Stacking and Balancing, and Modular Board.
ACTOP: Ancient Construct Tower of Philosopher, a.k.a. 古代建築「賢者の塔」 or KOZO, is a three-dimensional stacking game in which players build chimney-shaped towers out of polycubes placed onto a board. One round is composed of the two actions of placing one of the twelve polycubes and a balance stone within the confines of the 8 square-gridded base. The cubes of the positioned polycubes dictate the points awarded. If a player's tower topples, they lose the game. The game ends when a player's tower topples over or if all the available polycubes have been placed. At the end of the game, the player with the highest score wins. This game is a development of the designer's earlier game Ancient Construct. Since the raw materials were no longer available to make Ancient Construct, the designer revised the game, introducing a strategic element and expanding play to six players. Publisher's summary ポリキューブを煙突状に塔を建てるようにボード上に配置していく立体積み上げゲームです。1手番はポリキューブとバランス石を置く2つのアクションで構成されます。配置したポリキューブのキューブ数が得点となります。 途中で塔を倒したプレーヤーは負けとなります。塔を倒した時と全てのポリキューブが配置された時点でゲームオーバーとなります。ゲームオーバー時点で一番得点の高いプレーヤーが勝ちとなります。
KOZO 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 KOZO is 15–30 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 KOZO 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.
KOZO 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.
KOZO belongs to these categories: Abstract Strategy, Action / Dexterity, and Puzzle. Its main mechanics are Tile Placement, Stacking and Balancing, and Modular Board. 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 KOZO are: Mitsuo Yamamoto. 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 KOZO 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.