Warner Bros. Interactive has signed a deal which has licensed Epic's Unreal Engine 3 until 2014.
The deal also means that Batman: Arkham Asylum developer Rocksteady and Mortal Kombat studio NetherRealm will be using the engine exclusively on all projects throughout that period.
"Unreal Engine 3 is one of the leading development tools available for today's creative teams and it is a perfect fit for both NetherRealm and Rocksteady," said Warner's senior vp of production and development Samantha Ryan.
"Mortal Kombat and Batman: Arkham City use the engine's state-of-the-art capabilities to provide the important foundation in bringing gamers the experience they are looking for."
"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 Mark Rein, vice president of Epic Games.
"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."