>chat games
VRchat 
REC room for games

>shooting games
pavlov
hotdogs for singleplayer
the rest are shit

>hand2hand combat
Blade&Sorcery
Skyrim

>racing games
assetto corsa for multiplayer
dirt ralley and cars 2 for singleplayer

>space
Elite Dangerous
No Mans Sky (cartoon elite dangerous)

>anything else?
Minecraft has a decent VR mode. The offhand can only be used for shields, and its based on the console/bedrock version of minecraft.
Google earth VR is kind of fun but gets boring.
Some VR tutorials and classes on how to build circuit boards or engines are fun for nerds to learn stuff.