Hellapagos

From BoardGameGeek:

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, it's not likely that everyone will survive this backstabbing negotiation game for up to twelve players. After becoming shipwrecked, your group of castaways finds themselves on a desert island. At first, the surroundings seem like paradise, but life soon proves difficult. Water and food are scarce. It's doubtful whether everyone can survive this diet. There is only one solution: Construct a large raft together. But don't waste any time, because the clouds on the horizon suggest the arrival of a dangerous hurricane! At the end of the game, the players who manage to leave the island in time will win (assuming anyone survives that long!).