Hamtaro: Rainbow Rescue review. Classic Game Room presents a CGR Undertow review of Hamtaro: Rainbow Rescue for Game Boy Advance developed by AlphaDream and published by Nintendo. HAMHA! Enter a world where hamsters speak another language... well, re-enter it, anyway. Due to a freak accident involving a slippery object, a sleeping hamster, and a bucket of water, most of your ham-chat terms have been washed away. So you've gotta re-develop your vocabulary - with Bijou's help, this time - and thwart this jerkface hamster who's hell-bent on destroying relationships left and right. That's not a thing Hamsters are normally wont to do. That's why it's intriguing. This video review features video gameplay footage of Hamtaro: Rainbow Rescue for Game Boy Advance and audio commentary from Classic Game Room's TJ.