A 2-4 player map by Undertone.
Flooded Theta Passage
It's the Theta Passage, but with the main plane in the middle all full of the sea. All that remains is the four corner bits, and only a narrow passage connecting them. Will you brave the trecherous pass to attack your enemy, or bomb their heads off from afar? Have fun chaps!
"But how do I install it?"
Stick this folder into your "Maps" directory, then play the game!
You can use this file for whatever you like, I only really used the basic map and added lots of water.