Tutorial
http://www.makhonkit.com

Entire Collection
http://www.redefiningpiano.com

A mixture of the songs from the games that I've played. List of Songs:

1. Final Fantasy VIII Battle
2. Final Fantasy IX Battle
3. Final Fantasy V Battle
4. Pokemon Classic Battle Theme
5. Megaman/Rockman Dr. Wily's Theme
6. Metal Gear Solid Original Theme
7. Tales of Destiny 2/Eternia Ability Test
8. Final Fantasy VII Those who Fight

Thank you