I highly recommend viewing the YouTube video before playing! Anyway, here is some text :P
NOTE HOWEVER: commandblocks needs to be enabled to join teams

Everything needed is in the menu: /function levels:menu

[​Inspiration]
This game was inspired by the levels game at the SkyDoesMinecraft Network Server, that shut down some years ago.

[​The game]
There are four teams competing to be the last alive. You start on an island with your team, where you gather resources as efficiently as possible. After some time the island will explode, bringing everyone to the next layer where you continue to gather recourses and gear up. As layers get removed, you get closer to the last layer. At the last layer the teams meet for a PVP battle. Last team alive wins!

[​Early PVP]
If you want to risk it, it is possible to bridge over to other teams before the PVP layer and engage in early PVP fights. It is also possible to skip islands by jumping down. Note that falldamage is disabled during the entire game.

Update V1.2
- Joining players will spectate
- Added team randomizer feature /function levels:randomize
- Now keeping better track of arenas