
- BGG rating
- 8.4
Kaiju Siege: Kaisen Expansion
- 1 player
- 15–20 min
- 2021

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

For 1 player
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Answers come from the official rulebook, with the page to check.
Kaiju Siege is a board game released in 2017 for 1 player, 15–20 minutes per game, and ages 12 and up. It was designed by zombie homer and its main mechanics are Variable Player Powers, Dice Rolling, and Worker Placement.
Description from the designer: You are a Japanese warlord in the Edo period, sworn to protect your shogun against all enemies. However, no one is prepared for the emergence of Kaiju attacking castles all over Japan. You command a group of peasants and warriors, with help from your allies, to defend your castle against the Kaiju Siege. Kaiju Siege is a solo worker placement game. The goal of the game is to defeat the Kaiju attacking your castle in 10 rounds. Each game plays differently, as you can choose between 8 characters with variable powers, 5 Kaiju with unique special attacks, and 8 missions that increase the difficulty of the game.
Kaiju Siege supports 1 player according to the catalogue. This is the publisher’s listed player count, so the game is designed for exactly that number of participants. Variants for other group sizes, if any, are described in the rulebook of your edition, so check it before setting up a different configuration.
The listed playing time for Kaiju Siege is 15–20 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 Kaiju Siege for ages 12 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.
Kaiju Siege has a complexity rating of 2.2 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.
Kaiju Siege belongs to these categories: Print & Play and Science Fiction. Its main mechanics are Variable Player Powers, Dice Rolling, and Worker Placement. 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 Kaiju Siege are: zombie homer. 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 Kaiju Siege 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.