Hallmarks of great negotiation games
I've been thinking about what makes negotiation mechanics work well in board games. I've played Cosmic Encounter quite a bit and really enjoy it, but I often find the negotiation isn't as central as I'd like. Deals can sometimes feel optional rather than essential.
For those who've played a range of negotiation-heavy games, what do you think makes a negotiation game truly great? Which games do you think have the most interesting diplomacy, alliances, and deal-making, and what mechanics make those interactions feel meaningful?