Jphn King, or WaCkA, took the idea here from the "battle room" in the novel "Ender's Game" by Orson Scott Card, and what we have here is a truly three-dimensional arena, set in deep space, where, unlike Asteroid Bonus, you don't float off and die if you leave the rocks. There are two teleporters to small shacks with a hypershot or a pulsator, there is a whomper at the centre ( though the two rechargesfor it are dummies), there are other weapons and health also to be had. There are plenty of rocks to hide behind, and in fact this is a great place for a battle, and an idea I have been waiting to see!
One thing I didn't realise until playing against Black Dragon here, though, is that trying to spot an opponent is hard, since he can be above, below - anywhere! This means that sneakiness and patience will be needed, as much as the usual battle skills...
So, this is a special arena, and a must-have. Try it - you'll be surprised!