On February 28, 2018, 3D Realms announced the game "Ion Maiden", a prequel to "Bombshell", developed by Voidpoint and using Ken Silverman's Build Engine. In May 2019, the company was hit with a $2 million trademark infringement lawsuit by heavy metal group Iron Maiden who claimed "Ion Maiden" was “nearly identical to the Iron Maiden trademark in appearance, sound and overall commercial impression” and was “attempting to trade off on Iron Maiden’s notoriety.” The company said it would “review its options once we receive official notice of the lawsuit and will make any necessary decisions at the appropriate time.” In July 2019, 3D Realms and Voidpoint changed the name of "Ion Maiden" to "Ion Fury", in order to put an end to the lawsuit. "Ion Fury" was released on August 15, 2019.