My uneducated guess is that those are from custom stuff found on the servers you visit. Quake 3 and similars (Jedi Outcast/Academy, Unreal Tournament 99/2004) would download any custom maps, player models and skins if the server you were connecting to had any.
Comment on A 2003 complaint about Half Life 2
TriflingToad@sh.itjust.works 1 week agowhat is it about games like gmod TF2 and VR chat that just makes them take like 50gb each
ICastFist@programming.dev 1 week ago
kayohtie@pawb.social 1 week ago
Idk about the others but in VRChat it’s animes and furries who don’t compress/resize textures and same with worlds.
At least VRC lets you define max cache size and it generally respects it.