During its September 1st Ampere event, NVIDIA showcased a new real-time ray tracing tech demo, Marbles at Night. This tech demo was running on a single RTX3090 at 1440p and with 30fps. And, as you will see, this is what future PC video-game graphics will look like.
NVIDIA Marbles at Night RTX is a fully playable physics-based game. Unfortunately, though, NVIDIA has not released it to the public.