I was looking around online recently to see if someone was keeping a definitive list of digital games that have been "delisted" (no longer available for download or purchase digitally) and found this website:
Pretty interesting stuff. They are keeping tabs on delisted titles, upcoming delisted titles and upcoming server shutdowns. Sad to see so many titles that were offered digital only that have become "extinct" (cannot be found physically anywhere else):
That's quite a long list but I suspect it is nowhere near complete. Just thought it was interesting to see someone cataloging games that you cannot get anymore. There are some games there that I really wanted to try but never got around to purchasing (Afterburner Climax was one) but I guess when its gone its gone.