OFFICIAL MC MINI GAME : SPLEEF

The objective of Spleef is to break the blocks underneath your opponent before he breaks the blocks underneath you. This is the most fundamental element of Spleef.

In a game of classic Spleef, the player wins a game when he is the last person standing on or in the Spleef Arena.

The Spleef Arena is as simple as it gets. It's a room with a big floor. Typically, it is 40 x 40 blocks large or larger.A Spleef floor can be many things, but during a game of classic Spleef, it is an easily breakable material like glass or snow. Sometimes the players are given a tool like a pick axe to make the breaking of blocks even easier. Underneath the floor may be any number of materials from water to lava.

Rules :

Creating blocks between the game's start and end is forbidden.
Creating or destroying blocks after you have lost the round is not allowed.
The losers must replace the blocks that were deleted during the game after the round is over.
If players have entered a stalemate and are all on separate "islands," and unable to access each other to continue play, either the person with the most space wins, or the arena is reset to continue play.
Hitting players is against the rules, except in variations.