More games one pc Install first game. Do all updates. Copy game and paste on same pc. Give the folder a new name. -launch have to be inserted for the diabo exe file, which start the game. Google how to do. After new patches first game have to be updated and you have to copy and paste again. Is allowed to have three intances of d3 in one household. Think is also possible just to have one updated game and to start it three times, if you have inserted the -launch suffix to the starting exe file of diablo 3.