[cju]

No really a board game but Werewolf (a.k.a. Mafia) is great. It's fun and simple to learn. However it depends a lot on the quality of the game organizer and the athmosphere he is able to provide.

http://www.eblong.com/zarf/werewolf.html

https://en.wikipedia.org/wiki/Mafia_%28party_game%29

[eimieimi]

Seems great for the larger group and I'm expecting one table to have about 10 people so this is good. Thanks so much!