@golgaloth #TTRPG
Delta Green because I like the bonds mechanic & Blades in the Dark.
Mostly I go for settings rather than rules. I used to buy gurps sourcebooks, but use the basic role playing rules booklet that came with the old Runequest/Cthulhu boxes.
BRP rules can be adapted to pretty much anything, and it's great for first timers coz everyone understands having a % chance to do stuff.
What I don't like is spending half the session looking up specific rules spread over half a dozen books.