I do have to wonder what games require minis. I don't think I've ever played one where the book told you, "And you need these minis. No ifs, ands, or buts." As for games that 'require' minis, the way later editions of D&D 'require' them, I don't think that's a big thing, since it's so subjective. As I mentioned upthread(last page now maybe, is that still upthread?), I 'require' minis for just about any game.