Ice Age 2: The Meltdown for the GBA is a sequel to the first Ice Age game. The game likely built on the original's gameplay mechanics, while introducing new levels, characters, and challenges based on the second movie.  '(U)' signifies a US release, with '(Rising Sun)' indicating the ROM distribution source in the online emulation scene. 

Ice Age 2 - The Meltdown (U)(Rising Sun)

Ice Age (E)(Patience)