I got one of them last month, for $15 (so it's not a total loss, heh) and I can say that it works GREAT. I have NO problems AT ALL with it. It works with all of my actual PC games (Guilty Gear XX#Reload, Melty Blood, a few others), all of my emulators (though N64 emulation is difficult, thanks to button placement) and well, the only things it doesn't work with are things like dance pads and whatnot. I don't have the guitar controller so I can't check for that. Basically, it works with a regular PS1/2 controller, and uh, I guess it'll work with anything that doesn't require you to press two opposite directions on the D-Pad or Analog at once (like, well, a dance pad).