The techniques from the Game world are changing the film world. Although the greenscreen is still a good solution in the film world, the software of unreal engine takes it to an even higher level (sometimes also combined with greenscreen techniques).
See the video here : Virtual sets in Mandalorian - VFX & Unreal engine
Complete movie in Unreal Engine
How was this movie made in unreal engine (UE4), see the explanation here :
Unreal Engine :
The Unreal Engine is a widely used game engine developed by the computer game studio Epic Games. The engine was first used for the futuristic first-person shooter Unreal, which would later be used as the basis for games including Unreal Tournament, Tom Clancy's Rainbow Six: Raven Shield, Red Steel, BioShock and Fractured Space. Although the engine was produced and originally tuned for first-person shooters, it is also used many times for genres other than third-person games (Tom Clancy's Splinter Cell, Gears of War, Gears of War 2, Mass Effect 2) and MMO games (Vanguard: Saga of Heroes, The Chronicles of Spellborn).More on Unreal Engine check : https://www.unrealengine.com
