BoomBox is a minigame, that was made by TangoTek from HermitCraft server.
BoomBox is a water maze with a floor made of redstone blocks. There are 2, 3 or 4 teams and every team can have 1 to 4 players. The goal of the minigame depends on what game mode you are playing. But the principle is the same- blow opponents with TNT, that you will find randomly in the barrels with some food and other special items.