The fateful day comes, you install the game and ... well, it's a decent enough game, but it just isn't what you expected. You play it for a few days, and then start wishing you hadn't given away all your gold and sharded your epics in your old game. And maybe you suddenly regret telling the raid leader just exactly, precisely what you thought of him. So do you stick with the new game? Or return to the old? How long do you give a new game to grab you before you erase it from your hard drive, put the disks on the shelf, and call it a decent effort but just not the game you wanted to play? Just the free month? Until you reach the max level? Or just fifteen minutes perhaps?