Hamtaro: Rainbow Rescue(とっとこハム太郎4 にじいろ大行進でちゅTottoko Hamtaro 4: Nijiiro Daikoushin Dechu) is a video game developed by AlphaDream for Game Boy Advance and the sequel to Tottoko Hamutaro: Tomodachi Daisakusen Dechu (Japan only), Hamtaro: Ham-Hams Unite! and Hamtaro: Ham-Ham Heartbreak. It was released in Japan and PAL regions (but was poorly distributed in some countries which makes copies of this game rather rare). It was set to be released in North America, but was cancelled. The series is based on the manga Hamtaro, written by Ritsuko Kawai.