Mech ff tactics

I liked tactics and then i picked up a demo for front mission 4 at gamestop. man...sooooo good (and long. been playing for 6hrs). I read on the boards that fm4's already out in japan and they're releasing it in the us next month. I read about the demo on ign and later found out the demo was free off www.square-enix-usa.com .oh well.


Are the other FM's as good? I heard something about FM 3 being on PS1 so someone's played it. Has anyone been able to unlock the other levels on the demo?