Thread:Dragonvaledaily123/@comment-6728311-20130610205653/@comment-5294711-20130611015410

"You place them, they will attack" That's not how you distinguish a Special Agent from a Tower. There're distinct differences:

1. You buy towers with normal cash, you buy Special Agents with Monkey Money.

2. Once bought, Special Agents can be stored in your Inventory and you can summon them at any time, in any game. When you buy a tower, you must place it instantly and it's only for 1 game.

3. Towers have 8 (or maybe more in later games) upgrades which you buy with cash and only apply for that tower, Special Agents only have 1 "upgrade" (actually Pro form) which is automatically and permanently upgraded for all agents of that kind just by placing enough of them

I think you may say both Special Agents and Towers are all "Units", but the Agents and Towers themselves are very, very different.