These are games with five as their own minimum, which is a small and distinctive shelf: designs that simply do not function with fewer people, usually because hidden roles, teams or negotiation need a crowd to work at all.
Social and negotiation games tend to improve at this count rather than suffer, because more players means more to read and more to bargain with.
How this list is chosen
These five come from the same query that powers the finder, run with one filter pre-set. Expansions are excluded, so everything here is a game you can buy and play on its own, and only games with at least a hundred ratings are eligible.
Ranking is by community rating adjusted for how many people voted, not by raw average — otherwise a game rated 9.0 by a hundred devotees would outrank a classic rated 8.6 by forty thousand. The full method is here, and you can set your own filters to narrow this further by age, complexity or player count.