EuroGamer have written a review of Rayman Advance, arguably the GBA's most visually impressive game so far. Here's a taster:
"Rayman's path through each level is frequently eventful, and you're almost never constrained to just running and jumping for an entire scene. Digital Eclipse have used all the tricks; power-ups, varying the pace, forcing players to clamber up steep slopes and hop to new heights. One level will see you planting seeds in the ground which grow to form platforms as you attempt to escape rising water (a la Rainbow Islands), whilst another sees you befriending a giant defeated mosquito and taking a high-speed journey through the forest on his back. While they're not all wholly original ideas, when cobbled together into one package it feels very complete."