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.