Every country gets a fixed amount of points for medals, plus a variable amount of bonus points for won games: bonus = won games / divisor, where divisor = number of players × 0.1, but at least 1. Basically, countries with no more than 10 people get full bonus for won games, countries with 20 players get half bonus, etc. This may sound unfair at first for countries with several people, but they are much more likely to win more medals, and those are worth a lot more points. (gold = 10+ won games, etc.)