It’s no secret and no surprise that Rock Band is selling quite well. The game is one of the most fun multiplayers around and is on both major gaming platforms and will hit the Wii soon. The talk of the Web today, though, is the $208.7 million payout Viacom has ready for Harmonix, the Rock Band developer.

This is a performance-based earnout, as Viacom’s MTV bought Harmonix in 2006, so the money would go to Harmonix shareholders.

This is great news for Harmonix as well as Rock Band fans; this means the promised updates are sure to materialize, which is going to be the key moneymaker for this game.

Harmonix Earns Possible $208.7 Million Bonus From Viacom [Gamasutra]