This is a recreation of the lobby from the Battle Mode Minigame from the Console Editions of
Minecraft.
Right now, it's just the lobby, but I might add some actual Battle Mode maps. It's a good area to have fun with friends in PvP style. The map is well balanced and this will all depend on your skills of warfare.
On the map there are various distributors of weapons, armor and potions. You can fill them with the right items.
Author of map: Vajwazzzzz (You can write your suggestions and wishes on mail [email protected]) 
Install Battle Mode Lobby Map:
Download the map
Remove the map from the archive
Move the map by path: "/games/com.mojang/minecraftWorlds"
Go in Minecraft PE → Play → Select the installed map
Enjoy the game!
