Monsters have taken over the land, and the player is given access to only 2 permanent human characters, Ramza and Agrias. Monsters are A LOT more powerful than they were in vanilla, with buffed stats, lots of innates, and access to 4 moves a piece instead of the vanilla 1-2. Plot changes are mostly humorous/parody of vanilla FFT.

Why?

I had the initial idea for years to create a game in a post-apocalyptic setting, similar to the Dungeons and Dragons campaigns I ran back in 2003. In this game world, humans managed to accidentally open a portal to another world where monsters ran free and magic existed, thus destroying over 99.99% of the human population. The few humans who remained either used magic to change themselves into monsters to blend into the new world or learned skills (magic, fighting, etc) as a means to protect themselves from a monster population.