I was playing continuum on vista just a week ago. Its the RC1, x64 edition, build 5600 i believe. the only problem was that the client GUI (not the game itself) was blank, only the skin. Didn't even need campatibility mode. The game was already installed from my windows XP boot. In the GUI, the ships, zones, text, was invisible, but it was still possible to choose using the profile options. The game itself ran perfectly, no lag or strange bugs or anything. didn't try the minimized chat feature. About getting it to run on mac, that shouldn't be too big of in issue with the new macs, since they can dual-boot both Mac OS and Windows _____. If you want i can do some research into the vista GUI bug, but i'm no programmer. and by new verison, you don't mean the next level/thirdspace thing? though i've always been dreaming of a fully 3D flying shooting massively multiplayer online game - like those Star Wars flying games, but instead multiplayer like continuum is.