For me it's probably Jazzpunk, but I liked Disco Elysium too. I've been looking for something to scratch that "Jazzpunk surrealist comedy itch" for a while and not many games have come even close.
It's both the saddest game I've ever played and perhaps the most uplifting one. It balances the knife's edge between nihilism and hope so well. It can also be hysterically funny, yes. It's truly unique in terms of writing.