Ueda Castle
Playable characters in the game (except for Ranmaru Mori and Okuni) have their own stories. Each story contains five stages (except for Ieyasu Tokugawa and Mitsunari Ishida, who both have six stages), plus a "Dream Stage" or "Gaiden" (Side Quest) in the Japanese version, that effectively asks "what if". For example, Yukimura Sanada's Dream/Gaiden stage (Battle of Sekigahara) puts him into a battle that took place historically between his fourth and fifth stages (Ueda Castle and Osaka Castle respectively). Correspondingly, since Mitsuhide Akechi and Nobunaga Oda both have endings where they won their historically final battles and survived, their Dream stages have them mopping up their gathered opposition.