A very rare Final Fantasy VII Beta/Demo, which you could get more than 10 years ago, with a game called Tobal No.1
It contains some funny stuff that is not in the original game.
For example, you start with Tifa, and you even have the Neo Bahamut summon!
This disc also contains trailers and demos for SaGa Frontier, Bushido Blade, and Final Fantasy Tactics.
To play this, your PSP must have Custom Firmware!!!
Then just put the FFVII Interactive Sampler folder in ms0/PSP/GAME