The 
Northlight Engine[1][2] is the in-house 
game engine created by 
Remedy Entertainment. The first game produced with the Northlight Engine was 
Quantum Break, an 
Xbox One and 
Windows 10 exclusive title.
History
Remedy Entertainment's previous endeavors, 
Max Payne and 
Alan Wake were both designed with in-house engines created by Remedy. The engine used in 
Alan Wake, dubbed "The Alan Wake Engine", was created using the Havok physics component.
[3]
For 
Quantum Break, Remedy created a completely new engine, dubbed the "Northlight engine". According to creative director 
Sam Lake, the Northlight Engine was an evolution of their storytelling process. The Northlight Engine can purportedly capture facial motion capture using surface capture and 4D scanning better than previous engines developed.
[1] Remedy’s Graphics Programmer, Ville Timonen, states that 
Quantum Break is the second game to utilize DirectX 12, which was implemented in the Northlight Engine.
[4]
Early in the process of the Engine's use, the development team encountered problems with refining A.I. and fidelity issues
[5], but argued early demo footage used to demonstrated was not fully implemented at the time.