Samurai Siege is a browser-based feudal Japanese strategy and castle defense game developed for the Slapjam AI jam. Set during the Sengoku Jidai era, it features a vertical mobile-portrait layout optimized for touch controls alongside responsive desktop scaling.

Players manage tactical unit deployments and castle defenses against incoming enemy waves while experiencing a cinematic atmosphere complete with a Mount Fuji digital matte-painting background, weathered earth flooring, and ancient scroll-themed UI elements.