Are ALL of the Quelle games "pirate" copies of other games or are there "original" Quelle games too?

I have about 25 Quelle games so far, most of them CIB, but I am thinking of selling them all if they are only pirates of other games. My space is limited and there are almost 100 Quelle games - that's not worth it for me, I could use the space otherwise.

If there are "original" games from Quelle, however, I would keep those ...

Any info appreciated!