Based on the real life human defense system. Defend against evil bacteria and viruses. It's possible to build a maze like DesktopTD. The game and towers are pretty complex but once you've figure it...

Build your towers out of different elements, allows you to completely customize those towers, just like it's little brother: WhenHellFreezesOver. This game is better balanced and has a very nice map.

Defend your girlfriend against lines of creeps, game from Addicting Games. Place your towers smart in a well balanced game against some evil looking holy pig.

The aim of this abstract strategy game is to build and upgrade different types of Towers to defeat your enemies. You can't delete/sell a tower once you've placed it, so make your decisions wisely.

More fuzzy, fur monsters that attack and need to be stopped in a light themed game.

Defend your garden for creeping insects! Go Go Garden Defense puts you in charge of a tower-based pest control system. Will you squash them with bleedlings, splatter them with sling berries, or bom...