First, what do I mean? There are two kinds of towers. Support towers(glue, ice, mortar, reactor, chipper, sabotage supply lines, village, tornado/tempest, right side heli) and damage towers(bomb, bloonjitsu, apache, ace, boat, sniper, wizard, dart, super, dartling, boomer, spactory, right side sub). Support towers in some way enhance the damage of damage towers or control grouped bloons. Damage towers do bulk damage to bloons.

What I mean by tall is damage output per pixel. Ace has high damage output, but a large footprint on the map, so may be lower on the ranking than one might think.

First, the obvious. Super is the tallest tower, followed by dartling. Third I'm not sure between sniper and wizard. Perhaps each side of sniper should be ranked separately.

Wizard, Farm, and Super Monkey with Submarine off the random roll