I was thinking about buying windows 8 when it comes out and was wondering if Toribash would work on it cause it's the only game a i play anymore so if I can't play Toribash then I'm not buying windows 8. Will it work then?

Of course, Windows 8 has backward compatibility, i'm running it fine right now, no problems whatsoever.

Entirely depends on your hardware, TB works on Win 8, though most hardware doesn't have fully working drivers yet.

I advise giving it a month or so before bothering with 8.