Mytoons is down
Consider google towerdefense, there are tons of clones out there now.
Antonio
http://www.mytoons.com/game/play/3309
This is a thinking Strategy real time game. It's all in flash. Very nice, and addicting. So watch out if you have work to do...(I warned you)
There are horde icons that go from left to right. YOu have to stop them using towers. There are several tower types and they each cost different amounts. You have to stop the hordes. The horde icons have to go around the towers.
My top score was 2252. After I got the hang of it. It's like shooting lemmings. The ai is pretty good.
I am addicted to this game.