Saiki Kusuo no Ψ-nan: Psy-Mayhem

Saiki Kusuo no Ψ-nan: Psy-Mayhem is an action video game developed by Spike Chunsoft and released for the Wii in 2009. It follows the adventures of Saiki K. throughout 8 distinctive episodes, as well as featuring an open world environment where players can freely explore the town, school, and other locations. Players can use their psychic powers to interact with objects and NPCs, completing missions and discovering hidden gags. Throughout the open world, players can also discover various mini-games and challenges that utilize Saiki's psychic powers. The game also offers multiplayer modes where players can invite up to 4 friends to join in the chaos. Players can customize Saiki's appearance with different outfits and accessories, unlocking them by completing challenges and finding collectibles in the world. Retailing for just $19,99 in 6 different languages (Japanese, English, French, Spanish, Chinese and Portugese), Saiki Kusuo no Ψ-nan: Psy-Mayhem received generally good reviews, with critics praising the art style, gameplay and comedic value, but disappointed by its short length and lack of replayability. It received a score of 82 on Metacritic, earning it a sequel on the Wii U in 2015 (Saiki Kusuo no Ψ-nan: Chō Nōryoku), and an enhanced port for the Nintendo Switch in 2019, comemmorating the game's tenth anniversary. (Saiki Kusuo no Ψ-nan: Subarashi Psy-Mayhem). Note: a port of the sequel was planned for the Nintendo 3DS but was scrapped in late 2017 in favor of the Switch port of the first game. The Wii game alone sold 2.2 million copies, with the series selling 4.32 million copies.