So far, I can only count about 4-5 unopened for me:
*Psychonauts(Xbox)-it was $3 from Kmart, meant to finish playing it, but I packed away my Xbox a while ago
*Fantastic Four: Rise Of The Silver Surfer(PS3)-normally, I would NEVER buy a movie game, but for $5 from Kmart, anything is worth a shot.
*TimeShift(PS3)-yet another $5-10 game from Kmart that I'm sure I'll play SOMETIME, but not anytime soon with my increasing backlog on PS3.
*.hack Redemption(PS2)-yet another $5 game from Kmart....which I only picked up for the collectibility of it.....
*Marvel Ultimate Alliance(non Platinum Hits)(Xbox)-I picked this up since it was $5 as well at Kmart, though I had already picked up and opened a Platinum Hits copy from Target for $5.
I also had the original Legends Of Wrestling and Batman Begins and Darkwatch for Xbox, but I got sick of seeing them collecting dust and I gave them to my one buddy for him(BB and D) and his one niece(LOW) to play.
Now, if we were talking about opened but never completed games.....geez...I could be here till Doomsday talking about all of my prior gen stuff I never played through completely(and sold off).