In the summer of 2024 I bought both Riven 2024 and Myst 2021. While both games are great I had issues with HDR support in Myst 2021 with high brightness objects or light sources appearing as large splotches of excessive brightness. This was version 1.8.6.

I just downloaded version 2.0.6 of Myst 2021 and tested 4K display with ray tracing and HDR and this appears to all be fixed. The result is truly amazing.