I didn't know about the metadata settings, went to look at them - they seem pretty useless for TTRPGs. There's no way to even say "this is a print-and-play game; platform & controllers don't apply."
for tabletop games, leaving the Input methods field empty is best. setting the game as a physical game should be done in Edit game > Classification.
you can still set all the other metadata, so it’s actually just as useful for tabletop games as for video games.
although it would be great if they listed input methods for physical games:
if itch lists virtual reality as an input method, i don’t see why they couldn’t list tabletop, since both input methods alter your environment for playing the game.
I was unable to set a minimum number of players higher than "1" for a tabletop game until I selected a multiplayer option, and all of those are terrible for tabletop games. (Sure, let's go with "local multiplayer." Fine. I'm not going to decide which "server" option translates to "you can play this on Roll20.")
Accessibility options are also weird. Ah, sure, let's call it "high contrast" since it's "black text on white background."
It'd be nice if they had input methods or just listed "Tabletop Game" as an input method of its own. Other "inputs" for tabletop games: