Hi! Hamtaro Ham-Ham Challenge (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), 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. The game was released in Japan on March 15, 2007, in Europe on May 23, 2008 and in North America on September 23, 2008.