Looking for resources on this that I might have missed. Not basic 101 stuff but off the beaten path, insights from specific blog postings, game features you have seen that you think really nailed it.. Gameplay related not external community stuff. To give some more context I'm working on what specific approaches create games with high socialization among players. I've played games that have it. I've worked on games that have. But even on games I've worked on that nailed it, I still can't provide a bullet point list of ya that's why it worked. Genre doesn't really matter. If anything I think looking outside the genre of the game I'm currently working on likely has more potential.