Entrance to the Spleef Arena.
Lobby of the Arena. You would spawn on the center black block and then enter a door/portal to get to the actual arena. The red and blue doors are for the competitors
This would be the view you get if you enter a white portal (spectators).
Another view from the topmost corner of the ceiling.
This is the waiting room for the Blue Competitor. This is what he would see right after he steps into the blue portal.
The arena as the blue competitor would see it if he just stepped through the gate.
The upper deck...
... and then the view of the arena from the upper deck.
Also... you can see it in a few pictures, but there is an announcer's stand hanging from the ceiling. There is a glass door block there that when pressed sets off a timer to release the gates of the competitors. Very nifty