For me it’s first person puzzle games. I can think of maybe a dozen off the top of my head that came out in the last decade. I especially enjoy when they’re open world. The ability to just quit a puzzle that’s stumped you and go try something else for a little bit is incredibly refreshing.
That or modding. Modded Minecraft is done purely because someone wanted to have the functionality of magic wands or engineering or resource processing in their lego game. It’s completely unmonetized and gets extremely involved very fast. I fondly remember my nuclear reactor exploding and having to work around the irradiated zone. Good times.