okay guys, I also added a (hopefully) complete list of all the games I played until now. in the 3rd row of the list, you can find the edition. =)
if nothing is entered, I have no idea where I got the copy I played. video rental stores, friends that lend me their copys, magazine extras... whatever.
one more word on the steam versions: I already finished most of them earlier, I just wanted to "own" them again. I guess (most of) you know what I mean...
have fun.