Makers Spleef is spleef minigame. The objective is to make your opponents fall on the blue wool by mining under them.
There are five gamemodes:
Classic Mode - Classic of course, with a pickaxe, mine under your friends!
Item Mode - You can find bonuses like blocks, potions, weird things... well, you'll see!
Insane Mode - The most "complete" mode. In addition to have to avoid people, you will have to be careful with explosive zombies coming from the middle. Bonuses randomly spawn on the map and you run faster!
Skeleton Mode - You don't have a pickaxe but your have a bow. Arrows make big holes around them.
Bunny Mode - More speed and higher jumps.
You can also find particles or hats at the spawn. You can change your pickaxe 
Trailer:
https://www.youtube.com/watch?v=B3WVyiBUecU
Thanks for reading!
Keel