Final Fantasy 1&2 - origins -ps1
Final Fantasy 3 - DS
Final Fantasy 4 & Chono Cross - Chronicals -ps1
Final Fantasy 5&6 - Anthology - ps1
Final Fantasy 7, 8, 9 - Seperate games - ps1
Final Fantasy 10, 12 - Ps2
Final Fantasy 11 - pc, ps2, xbox

So pretty much you can get FF1,2,4,5,6,7,8,9,10,11,12 and play them on your ps2. I played the originals and have to say not much was changed during storyline. They just have bo bonus feathers.