I did a google search for "Vista games download" and was able to get all that were available in the Vista Program. I have yet to play them, but they are set up and awaiting a christening.
Windows Vista Games for XP *Update* « Jonathan’s Shrine
REPORTING BACK:
Well, I've tried most of the games for Vista...the "newer versions' of the XP lot only, and I must say, I AM NOT IMPRESSED by the graphics, or the speed. The XP games are cleaner, and sharper in appearance, and much faster. It appears that Vista is too hung up on trying to make it all look comfy, cosy ...marshmallowy...as opposed to sharp and streamlined...but that's just my opinion.