I made a perfect Multi-Player Arena. You can play capture the Flag(using wool), One on One duels, or even a all out war. The choice is yours. You start out in an obsidian house that has starting equipment for you to use. For capture the Flag and Team Death match there has to be a team captain. There is a room full of every type of wool for Capture the Flag. on the second story there is a butt-load of equipment for you to use. Once you leave the house you can't get back in without dying. For one on one duels there is a huge stone platform that you can battle on.

Additional Notes

It was originally going to be a world for my Pixel Art but i just started creating the world for war.