Personally, I don't think I would count games that have clear cases. Sure you can flip the art around, but it's not like it's a bonus alternate cover. It's more like taking the book from a CD and flipping it backwards.
I'm not sure exactly what you mean...
I meant that, if you could pull out the sleeve/cover of the game, and there was art (of any kind) on both sides of it (front & back) that it would qualify.
For example:
One of the PSP Persona games has the "standard" art-work on the one side, and (iirc) some butterflies or something on the other side...so I would include it in this topic...
Another interesting thing (I thought) to note - and that (somewhat ties-into the spirit of this topic) is:
that if you take the PSP versions of Star Ocean 1 & 2 , put them both next to each other, right-side up...the "1/2 Globes" on each game will line up w/ each other into 1 bigger & 'combined' one.