Riven was a title many of us had given up hope on ever seeing in 64-bit Windows, but at last it's here and working perfectly. So far, scenes that historically caused crashes and instability seem absolutely fine. There was an initial problem of the game crashing to desktop when saving but that has been solved in both GOG's forum and the MystCommunity sites (simply moving the game to a new folder) and everything else works wonderfully. A real bargain at $6 - thank you GOG and Cyan Studios!