Indeed, with emulators, you can get access to content that has already been developed as paid content. Now, as to cool linux games. There are a few, so, if you can port some, that would be splendid! How about tuxracer and neverball! neverball would love to use the accelerometer as well. Come to think of it, that would be natural for the tuxracer as well.

I would kill for uae emulated at 100% speed. Playing all the old amiga games on this form factor would be perfect.