Hellapagos

Hellapagos by Laurence and Philippe Gamelin, from Gigamic, is recommended for 3 to 12 players, ages 10+, and plays in 20 minutes.

Hellapagos is a "co-opetition" game in which players struggle to survive on a desert island and build a raft to escape before a hurricane devastates them. While players need to work together, its not likely that everyone will survive this backstabbing negotiation game for up to twelve players.