WOOHOOO! One of the two old games I joined GOG with the greatest hopes of getting a working Vista (and non DRM) version of just came to GOG,
Heroes of Might and Magic 2. It is packaged with its expansion pack, HOMM2: The Price of Loyalty, for ten bucks, and the manual and separate soundtrack, and some high-rez wallpaper come with the purchase as downloadable extras.
This is such a fun turn-based strategy game. The graphics are bright and somehow inherently cheerful, the music is good, and the gameplay is really fun. Just enough detail in the management to keep you on your toes without bogging you down too much, and great turn-based battles with really fun characters to play. It's also easily one of the most replayable games ever because of the robustness of its skirmish generator. You can create a game that will play quickly or one that will last for weeks, on all sorts of random map types, with different victory conditions, and there are quite a lot of premade maps already in the game if you find some favorites. Of course there are campaigns, too.
This is a huge must-buy for me. I could see playing this game forever.