Viacom is requesting that the founders of Harmonix pay back a performance-related bonus handed to them in 2008 following a drop off in sales of key franchise Rock Band.
The company paid $175m for Harmonix back in 2006, with an additional Rock Band performance-related bonus built into the deal. It subsequently dealt out a reported $208.7m based on the game's sales in 2007 and 2008.
It is this payment that Viacom is now asking to be paid back, according to a PaidContent report. A company 10-K filed by Viacom stated: "We believe that we are entitled to a refund of a substantial portion of amounts previously paid, but the final amount of earn-out has not yet been determined."
Last week, Viacom blamed the declining sales of Rock Band for an overall revenue decline of 3 per cent year-on-year.
"It certainly was a challenging year in 2009 for the videogame industry in general and certainly for our Rock Band franchise," said Philippe Dauman, speaking during an investors conference call.
Going forward, the company said that it would focus more on software than on hardware in order to reduce the cost structure associated with the franchise, and also be more selective in the music titles chosen for the series.
It has previously been reported that Viacom paid $50m for the rights to The Beatles back catalogue in The Beatles: Rock Band.
The game subsequently failed to reach the number one slot in the UK software chart upon its release and, at the end of last year, Dauman admitted that while Rock Band's economics were improving, it wasn't happening as quickly as the company would have liked.