Collection of good tower defense games

I have some free time and now I'll make a list of my favorite tower defense games.

• Tanks and Towers - amazing compilation of tower defense and offensive game. You can build towers or make tanks to attack the enemy. The game is very good strategy but may be too hard for newbie players.
• Born of Fire TD - fantasy themed tower defense game with heroes and skills. Actually a combination between TD and RPG. The art is a little Heroes3 like.
• D.I.Y TD - open map tower defense game. One of my favorites as you make the path for the enemies.
• Armed Defense - cool little tower defense game with military theme. I still don't get how poison and water towers fight against armored vehicles but the game is fun and addicting.
• Blob Tower Defense - in this game you build towers of squares that shoot the enemies. Its different than your regular tower defense game as you watch the game from one side.
• Mini Tower Defense - this is another tank-themed tower defense game.
• Red Storm Defense - a sequel of the popular Red Storm series. I like the robots and upgrades here. The game is very addicting and with fifteen levels.
• Bloons TD4 - I think that everyone knows about these series so I don't need to say much. Very good game with great gameplay.
• Germicide TD - one of the best tower defense games ever. In this game the theme is biology as you fight microbes that have infected you. The game is really fun, addicting but also somewhat hard. Anyway, another of my favorite games.