Several spin-off versions of 1.3 have been created as a result of demand by fans to experience the mod on other platforms or in other ways. It's been in development since 2008 and is maintained by Archael.
FFT 1.3 alters job, monster, item, and battle statistics to make the entire game provide a challenge that matches the complexity and depth of its customization system. The project started with the idea that players did not need to impose artificial rules on themselves to make Final Fantasy Tactics challenging if a mod could be created to do it for them. The primary goal of the project is to re-balance the original gameplay mechanics while adding difficulty.