
- BGG rank
- BGG #1,171
- BGG rating
- 7.6
Nokosu Dice
- 3–5 players
- 45–60 min
- Complexity 2.1/5
- 2016

2018
Rules assistance for Operation Master
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
Operation Master is a board game released in 2018 for 3–5 players, 30 minutes per game, and ages 8 and up. It was designed by Toiro (といろ) and its main mechanics are Dice Rolling and Trick-taking.
Publisher's summary オペレーションマスター (Operation Master) is a peculiarly quaint trick-taking game with dice and cards. You receive dice each time you win a trick. The dice you receive counts as your VPs (victory points). Strive to win each trick with the right sense of timing, while being attentive to all dice on the table. That is indispensable for your victory. このゲームはダイスとカードを使った一風変わったトリックテイキングゲームです。トリック*1に勝利すればダイスを獲得できます。獲得したダイスが VP ( 勝利点 ) になります。プレイヤーは場にある全てのダイスを把握しつつ最適なタイミングでトリックに勝利しましょう。それがこのゲームで勝利するために重要なこととなります。文中の青文字は 7 ページに用語の後注をします。
Operation Master supports 3–5 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 Operation Master is 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 Operation Master 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.
Operation Master has a complexity rating of 3.0 out of 5 from BoardGameGeek players, which makes it a medium-weight 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.
Operation Master belongs to these categories: Card Game. Its main mechanics are Dice Rolling and Trick-taking. 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 Operation Master are: Toiro (といろ). 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 Operation Master 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.