I am installing robot arena on to my mates computer but it keeps asking me for the proof of purchase code and I have lost the case with it on so does anyone have it?

Steve *Cough, tom* Just because you have a copy, and someone else might have one, doesnt mean that they will have the same code, because each code is made to be unique.

If you bought it *Cough* Phone the company, and ask em because they will have it stored on their computer data base. Otherwise theres only one other way to do it... HACK :(