prairiefire
Ultimate Frisbee Nut
I like the thought about special towers. In some other TD's they give you the option to build towers that don't fire but instead double the damage of any other tower (or turret) in it's range. This would be great for the later waves of creeps and limited space to build. Lets assume that something can be done for making it harder to get insane money from factories and harder to buy lives. in this case, space would be needed more for turrets/towers since it's really tough to go through the harder waves without losing lives. If you could put these 'firepower mulitplier' towers at prime locations on the map, you could really take on the higher level creeps! combine that with a 'slowing' tower or a 'disease tower' (this one when hitting a creep, would cause it's hitpoints to steadily decrease - more effective on slow creeps) and you'd have yourself a pretty fun modification!