We at Brain Audio built a 5.1.4 mock Atmos system in Unity to test the localisation and directivity of Atmoky's trueSpatial plugins.
Make sure to listen in headphones for 3D binaural spatialization!
Check out Atmoky's trueSpatial plugins here:
atmoky.com/products/true-spatial
For the sonic demonstration I'm playing Brain Audio's Immersive Audio Showreel, mixed in Atmos. Make sure to check out Brain Audio if you need sounds or music for linear or interactive projects!
brainaud.io/