The number one social game on MySpace is getting an iPhone app, as Mountain View-based Playdom announces Mobsters for iPhone today.
Most significantly, the company tells Gamasutra that its 13.5 million users can now play the game on either MySpace or iPhone seamlessly. This brings the company into more direct competition with social gaming rivals like Zynga, operator of rival title Mafia Wars.
Further, existing players of Mobsters on MySpace will be able to transition their progress to the iPhone version at launch.
But the company also tells us that it's adjusted gameplay in the iPhone version to account for the fact that the platform's less viral, and to allow those introduced to Mobsters via iPhone to still participate on the same level.
"For the pure iPhone players discovering the game for the first time, itís a bigger game," Playdom product director Jesse Janosov says. "It's more content and more dynamic."
As more social game companies begin migrating and extending their content to the iPhone, it's sure to add a new dimension to the social gaming phenomenon.