NVIDIA showcased this very impressive raytraced demo during its presentation last week. 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.