I'm guessing either they're indie titles that piqued your interest, or they're not that good, and you bought them in a sale. I, however, have an xbox 360 library of over 90 games, plus disk games, and that's just what fits on my 500gb hard-drive. About a third of those are forwards and backwards-compatible, some favorites, but not all the good ones. Among the ones that aren't there; -Tales of Vesperia -Sonic adventure 2 -Scott Pilgrim Vs the world -Resident Evil 4 -Mark of the Ninja -Limbo -Insanely Twisted Shadow Planet -IL-2 Birds of Prey -Dust: an elysian tail And dead space 2. Maybe there have been "definitive" edition re-releases of those games, but I don't much care to buy the same game twice, especially if i can't trade them in from my hard-drive, and I have to start all over.