M.U.G.E.N games....How do I start them?

[Tezuka]

I downloaded Battle Zero, a M.U.G.E.N game, but when I try to start it, it freezes and closes. Does anyone know how I can get this to work?

Two request topics today, please forgive. 

[Irock]

Maybe it's a corrupt game? I haven't touched MUGEN in forever so I don't really know.

[Tezuka]

That's what I thought, but there was a loading screen and after that it just crashed.