I had that Rahi set back then, and it was awesome that LEGO was able to store so many building models in one package. Replay value for the win! Of course, I built the bird sets only!
As for the GBA Matoran Adventures, that would of been a good game if they made it for the console instead of cramming all the action in that puny small GBA screen to do the platforming. The gameplay was average at best if it wasn't for the awful graphics and small screen. The chiptune music was wicked though!