Actually, you can't play the games on the disc itself, the disc only contains the "installs" so that you can install it on the PS3 and then play, as regular PSN titles. The only restriction is that the disc must be in the PS3 for them to work... So it's basically the same, as you install the three games separately and you have three different sets of trophies, so you're probably better off keeping the PSN version since you won't need the disc to play them. (It was a big let down honestly, I waited for this release to be able to play those games on disc since my HDD's full and I didn't want to buy them on the PSN so I wouldn't need as much space to install them... oh well, at least I enjoyed the games)