Hi Hamtaro! Little Hamsters Big Adventure (とっとこハム太郎 は～い! ハムちゃんずのハムハムチャレンジ! あつまれは～い! Tottoko Hamutarou Haai! Hamuchanzu no Hamuhamu Charenji! Atsumare Haai!?, lit. "Tottoko Hamtaro, Okay! The Hamchans' Ham-Ham Challenge! Let's Get Together, Okay!), known as Hi! Hamtaro Ham-Ham Challenge in North America, is a puzzle game for the Nintendo DS made by AlphaDream and published by Marvelous in Japan, 505 Games in PAL regions, and Natsume in North America. It is a sequel to Hamtaro: Ham-Hams Unite!, Hamtaro: Ham-Ham Heartbreak, Hamtaro: Rainbow Rescue (which was never released in America), Hamtaro: Ham-Ham Games, and the Japan-only Tottoko Hamtaro Nazonazo Q: Question Castle in the Clouds, and is based on the anime series Hamtaro. The game was released in Japan on March 15, 2007, in Europe on May 23, 2008 and in North America on September 23, 2008.
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