Ubisoft has sued hip hip group The Black Eyed Peas for $1 million.
The legal battle follows a breach of contract over the creation of an iOS game. A version of The Black Eyed Peas Experience (originally released for Xbox 360 and Wii) has been created for iPhone and iPad but has been in limbo for over a year because the group has yet to approve the product.
Ubisoft has spent almost £150,000 developing the game.
"Since March 2012, and despite Ubisoft's repeated requests, BEP Music has breached the contract by failing and refusing to either approve or disapprove the IOS game in writing or otherwise," said Ubisoft.
"Ubisoft has performed all of the obligations required of it under the contract, except as those obligations that have been excused by BEP Music's conduct or by operation of law.
"As a direct and proximate result of BEP Music's breach of contract, Ubisoft has suffered damages in an amount in excess of $1,000,000, which not only includes Ubisoft's out-of-pocket development costs, but also the profits Ubisoft has lost and will continue to lose."