In 2014, Gearbox sued 3D Realms and Interceptor Entertainment over Duke Nukem: Mass Destruction, a top-down action-RPG they were developing without the approval of Gearbox, which acquired the property in 2010. The case was settled a year later, Gearbox was affirmed as the full owner of Duke Nukem, Mass Destruction morphed into Bombshell, and all was well—until last year, when composer Bobby Prince filed suit against Gearbox, Valve, and Randy Pitchford over music he’d written for Duke Nukem 3D, which he claimed was used without permission in the Gearbox-published Duke Nukem 3D: 20th Anniversary World Tour.

Now Gearbox has filed a new lawsuit against Apogee Software (the legal name of 3D Realms) and co-founders Scott Miller and George Broussard that alleges breach of contract in relation to the sale of the Duke Nukem IP a decade ago. Simply but, Gearbox is saying that 3D Realms failed to mention that it didn’t own that music when it sold the Duke Nukem rights.

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