From the introduction:
Have you ever heard sports fans talking obsessively about fantasy stats and been really confused?
Have you ever wanted to stock a dungeon with nasty monsters while simultaneously being a member of the party, but not in a weird, GMPC, Mary Sue kind of way?
FANTASY DUNGEON BALL IS THE GAME FOR YOU!
It’s a GM-less RPG for players who create a dungeon with monsters, traps, and treasure, and then run through it as a party. The more damage you and your hand-chosen monsters do, the more experience you get!
The system is both simple and needlessly complicated, while still being completely not dissatisfying for all players. And you don’t need a GM! Who needs them anyway? Too busy hiding behind a screen to look you in the eye as they mercilessly crush your character.