Tower defence flash games!

So... I'm a fan of these, anyone else likes them? how about a topic for them?
My favourites I can think right now are Bloons TD 4 and GemCraft chapter 0.
Discuss! and tell me about games that are good, I've played lots but I'm sure there's many I haven't.

I love ALL defense games, and not just tower defense.

Here are a few good defense games I like:
Crimson Warfare - This one uses base building as well as being a defense game. It's moderately challenging, which I like.
Defend Your Castle - This is a classic.
Mastermind : World Conqueror - This one is also base-building and it's a very involved game where you play the role of a mastermind that sends out his minions to corrupt politicians.
Cursed Treasure - This is an extremely balanced game, but suffers due to lack of levels. Also, the higher levels get a bit monotonous but it's worth the struggle. I fully beat this game and it's worth my time.
Onslaught - This is the perfect tower defense game and has a hardcore community to go along with it to adjust for balance.

I'm sure there are others that I forgot...

Not tower defense but Demonic Defense 3 and Champion Archer my two favorite defense flash games.

I love ALL defense games, and not just tower defense.

Here are a few good defense games I like:
Crimson Warfare - This one uses base building as well as being a defense game. It's moderately challenging, which I like.
Defend Your Castle - This is a classic.
Mastermind : World Conqueror - This one is also base-building and it's a very involved game where you play the role of a mastermind that sends out his minions to corrupt politicians.
Cursed Treasure - This is an extremely balanced game, but suffers due to lack of levels. Also, the higher levels get a bit monotonous but it's worth the struggle. I fully beat this game and it's worth my time.
Onslaught - This is the perfect tower defense game and has a hardcore community to go along with it to adjust for balance.

I'm sure there are others that I forgot...

I've only played Onslaught and Cursed treasure out of those ( I think ) I'll try them out later when I have time :B

I know its not a flash game, but if you ever go to buy one, defense grid: the awakening is extremely good and better than most flash games.

I love ALL defense games, and not just tower defense.

Defend Your Castle - This is a classic.

I'm sure there are others that I forgot...

How can you not love the arthritis causing Defend Your Castle?

You barely even use the mouse after a while xD I got to the point where damage to the castle would be intantly cured, archers were enough to kill things, and I had enough mana to spam the convert skill, I had to go then xD
I'll try more games later :B keep postin' them.