Idiot: This computer just chooses a random direction and a random angle, hoping to hit something by sheer luck. (This isn't always too bad, depending on the walls.)
Unpredictable: This computer is quite similar to the Idiot, but it chooses powers and
angles that are less likely to cause suicide.
Straight shot: This computer chooses another tanks situated above him, aims straight and fires. If no dirt is in the way, this tank will almost always hit it's target. If a straight shot tank is the highest the screen, it will shoot with full power at a random angle.
Lobber: This computer chooses a target, and slowly hones it's shot until it hits. This usually takes 4-5 shots. This computer plays most like a human would. It is a difficult enough opponent that at first you won't always win.
Revenge: This computer uses a method similar to the Lobber to shoot at tanks. However, it will target whoever last shot closest to it. Hopefully by the time you are shooting that close to it, you are about to kill it...
Super-Lobber: This is a slight modification of the lobber. It targets human players before computer players, and knows how to buy & use weapons better.
Cyborg: This computer targets the player with the highest score and homes in on them with high accuracy. More than one cyborg is sure you ruin your day. You can choose from the options menu whether Cyborgs will buy shields to use during the round. You can also exclude them from being chosen randomly.
Ultimate-Cyborg: Someone sent me e-mail complaining that all the computer AI's were too easy. I don't know if they were kidding or not, but this AI should answer that problem. This computer will kill humans first, and will buy napalm to destroy shields if the need arises. If it is having trouble killing a certain player, it will consider trying to destroy other players first, and then come back to attacking the previous player.
Random: This will randomly choose between these types of tanks.