Survival Deathmatch

The idea is that we use a kind of island map. A gamemaster will be appointed and all players will be placed somewhere in the middle of the area. From here, the GM will quickly explain the game for the players and will release the players. From here on, players are in it on their own to be the last man standing. You can fight, chop, or even create alliances to help your way to be the last man standing. Just remember, that at the end you will have to cut the ties with your allies, since the last one standing will be the winner. Make sure they don't stab you in the back first though.
Digging and building a shelter is recommended and you might also want to make sure you have some kind of food available.