There is lots of cool innovation happening in game tech still. Look at games like Noita, Dreams and Teardown. Or for an even more recent game, look at Tiny Glade. There’s a recent tech talk about it which is full of wizardry: https://youtu.be/jusWW2pPnA0?si=IE-6W0Z1VCBld0AT

There is also lots of cool tech happening at the more foundational levels in engines and frameworks, for example Epic’s Nanite/Lumen/MegaLights in UE5.