The Great Battle Gaiden 2: Matsuri da Wasshoi is a single-player action, shooter, and platformer game in which players navigate through levels by jumping across floors and engaging in shoot 'em up segments controlling a flying lobster. In this game, the storyline revolves around an alien invasion occurring during a Japanese festival, featuring a cast of heroes including Ultraman, Kamen Rider, Knight Gundam, and Fighter Roar, who must defend the festival from extraterrestrial threats. It stands out with its unique blend of genres, combining traditional platforming with shoot 'em up stages, and incorporates themes of Japanese pop culture and comedy, offering advanced gameplay elements such as flying segments and character-specific attack styles.