I have been working on creating a guide for Nancy Drew game formats, and it has finally been published. You can access it by clicking on the image:
The page includes information on game formats, what is in a game case, game case types, different brand releases, special releases, weird releases, PC and non-PC games, cover/back/CD/inside the flap scan, and just about anything you can imagine. I hope it will help people identify their editions and assist in them adding to their collection.
Do Act Mysterious 