Another regional variant of the Ice Age GBA game, this Japanese release likely featured text and possibly some gameplay elements localized for a Japanese audience. The '(J)' indicates a Japanese release, and '(Chakky)' denotes the group who likely provided this ROM, indicating its distribution on emulation platforms. It maintained the same general gameplay mechanics as the other versions. 

Ice Age (J)(Chakky)

Hyper Sports - 2002 Winter (J)(Eurasia)