I think it's because you need the rest of the platform to make it work. FB games took off by spamming your friends and getting them hooked, too. If the platfo

I think it's because you need the rest of the platform to make it work. FB games took off by spamming your friends and getting them hooked, too. If the platform only has games, there's nothing really to spam... It's not like people are watching their wall for activity at that point. There ARE gaming networks out there, BTW. They just really haven't taken off. Search for 'social gaming site' to find some.