Hmmm... you question is a little confusing. The EVO 3D will play music and games right out of the box, no hacking required! You can root your phone and install custom ROMs, which will give you a new/different experience. Maybe if you provide a little more information about what you want to do with it then people from the community can tell you if it's possible or not.
Now that I've read your OP more closely I'm curious to know what you mean by "found an evo 3d?" Do you mean found as in someone lost it and you found it or found as in you found someone to buy it from? If you found it because someone lost it, then the right thing to do would be to call Sprint and give them the ESN# to see if they can locate or contact the real owner. Otherwise that's just pretty much stealing, which sucks, and I wouldn't imagine this community being very responsive in helping you "repurpose" someone else's phone.