Do you remember the old Xbox edition mini games? Well I have taken the best one in my opinion, battle, an made my own take on it with my own map and game mechanics, using only command blocks and other vanilla tools. In order for the match to end you will need to have more than one player in the start of the match. As one player destroys his last opponent, all spectators and players will be sent back to the lobby. Have fun with the map. :)