Answering that question is really the core of designing this service, isn't it? I have signed up for game sites before, sites that let me play and invest my ti

Answering that question is really the core of designing this service, isn't it? I have signed up for game sites before, sites that let me play and invest my time and attention in a game - I created accounts with those sites to save my progress. There have also been cases of making an account to access multiplayer features in games I beat the single player campaign for. The real key is the games.