The year is 2488 and all the races of the Known World come together in a celebration of pride, honor, skill and mindless violence. NAF Blood Bowl. Welcome to MicroLeague’s PC version of the award winning game from Games Workshop, Ltd. Blood Bowl is an epic conflict between two teams of armed insane warriors. Most have no idea why they are waging such ferocious battles, but they like it. Players pass, throw or run an inflated pig’s bladder into their opponents’ End Zone, while the other team, naturally - or unnaturally - tries to stop them.