This is a revision of the original Yakuman (Japan) game. The 'Rev A' designation suggests a later release containing bug fixes, improved graphics, or slight gameplay adjustments compared to the first version. Details about these changes are unavailable without access to both versions. The core gameplay would remain the same traditional mahjong experience, but slight refinements likely improved the overall experience.

Yakuman (Japan) (Rev A)

Xenon 2 - Megablast (USA, Europe)