As I understand it, Gaiden is a traditional brawling Yakuza game (just a short one) and Infinite Wealth is gonna be a turn-based game that might have brawl elements. IW is basically LAD2 and Gaiden is basically Yakuza 7. (Course, LAD 1 was the official Yakuza 7, and LAD 2 is Yakuza 8, hence...