The Chronicles of Narnia: The Lion, the Witch and the Wardrobe for the GBA
Small sample of the many tilesets I created or help create. For this winter set the trees (not shown) were created by another artist and I turned them into tileset friendly formations. This palette I had 234 colors out of the 256 to use for the background.
One thing I learned from this set is how hard it is to make snow and ice look interesting.