I thought this is a great story of how a small team were able to use Unity and Virtual extensions to make their film:
For our Filmakademie graduate short film we had to orchestrate a firework of different techniques: miniatures, matte paintings, greenscreens, on-set live tracking and real-time game engines.
In order to finish over 200 shots in under three months, with a core team as small as 4 artists, we had to use cutting edge in-camera effects, we called real-time projections. Using this technique allowed us to capture hundreds of believable in-camera effects directly on-set and saved us plenty of time in post-production. While some VFX studios are starting to use this technique for big budget productions, this is still far from being common use, and I thought I’d share my experiences, in case any of you are interested in using these techniques in the future.
https://www.deniskrez.com/post/real-time-projections-an-expedition-into-the-future-of-filmmaking
https://www.loveandfiftymegatons.com/