One in the Chamber mess around! :D

[Uzi]

Video is down but what is one in the chamber?

One in the Chamber consists of six players competing in a Free-for-All style game with a twist: each player starts off with only an insta-kill M1911, a single round of ammunition, a knife, and three lives.
Once a player has fired their bullet, the only means of acquiring another one is by getting a kill. This means that if a player kills an opponent with a bullet, they will get that bullet back. However, if a player happens to have no ammo left, then their only remaining method of killing is by knife. Knifing earns one bullet, which means that players can have more than one bullet at a time if they choose to knife their enemies as opposed to shooting them.

The winners of One in the Chamber are the players with the highest scores. Kills earn 100 points, while Survivor Bonuses (being alive when another player is eliminated) net 10 points. While it may seem as though it's a Last Man Standing setup, it's easily possible to be in the money without being one of the last few alive.