Bethesda parent company ZeniMax announced today that it has acquired Escalation Studios. You may not know the studio by name, but you’re likely familiar with its work. The Dallas, Texas-based outfit, founded in 2007, most recently contributed to id Software’s well-received shooter Doom. The studio worked on the game’s level-editor, SnapMap.

In a statement, ZeniMax said Escalation is working on “a number of projects” for PC, console, mobile, and VR, alongside other studios owned by ZeniMax.

Other ZeniMax-owned studios include Arkane, id Software, Machine Games, Tango GameWorks, and Battlecry Studios, as well as the internal Bethesda Game Studios and ZeniMax Online Studios.

“ZeniMax Media’s studios are responsible for some of the most iconic games in our industry,” Escalation Studios co-managing director Marc Tardif said in a statement. “Becoming a part of this amazing family of developers is an honor for everyone at our studio.”

Terms of the acquisition were not disclosed.

In other ZeniMax news, the company is currently embroiled in a lawsuit against Facebook over Oculus Rift. ZeniMax is asking a jury for Facebook to pay $6 billion over claims of stealing trade secrets.