Warner has entered into a licensing agreement with Epic, which will see the firm's development studios using Unreal Engine exclusively until 2014.
The studio-wide deal will make Unreal Engine 3 available to all development houses under the firm for PC, console and mobile titles. It will also allow Warner to use the engine on any project the company publishes.
“We're very excited that the talented production teams at NetherRealm and Rocksteady will continue to make Unreal Engine 3 their exclusive core technology for the next few years to create the exceptional titles they are so known for," said Epic Games VP Mark Rein.
"We look forward to seeing how the engine will contribute to the upcoming games from these teams and potentially other Warner teams and external developers who develop or publish with Warner."
Warner owned studios include the aforementioned NetherRealm Studios and Rocksteady as well as: Surreal Software, TT Games, WB Games Montreal, and a majority stake in Snowblind Studios.