Horizon: Forbidden Weight Watchers Section looked absolutely insane in 30fps mode, the HDR is pretty well done but its a combo of that, the fidelity of the graphics and the sharpness of the image.
Jedi: Fallen Order - On PC, native 4K with all settings maxed apart from one that didn't make a difference between high and very high (There are hidden "cinema" quality settings in the ini that make the DoF absolutely nuts quality but it was probably put in purely for marketing capture so isn't really viable on current HW, let alone what I had in 2019) + HDR was nutso, everything was so 3D it was amazing, SDR was so flat in comparison. Properly dark areas + bright lights like the pitch black areas with the red laser forcefields looked brilliant.
Ghost of Tsushima's HDR isn't perfect and the way they did the lighting in little houses (ie near pitch black inside with super bright big square windows) is really challenging for LCD but my trusty ZD9 held its own and had unbelievable impact from said windows when you looked out. Riding through forests with the sun filtering through the tree trunks was awesome.
Hitman '16/'18 looked amazing too, superb image quality. HDR was always broken for me on PC in those 2 but then 3 fixed it... except they generally fucked up the gamma in the game and made it all grey as a separate issue so I dropped it after 12 hours or so, might go back and try and fix it again knowing some quirks of PC HDR I didnt back then. The HDR in Hitman '16/'18 levels within '21 looks superb though at least.
Thats just some random stuff off the top of my head, if games are technically well implemented then they tend to look awesome on my display because its just very good.
