Tower Defence games have a simple concept: keep the enemy from reaching the castle. Just like another simple game called Capture the Flag, the key to winning is all about strategic planning. These fun games can be quite addicting.

Here is a nice article explaining more about Flash Tower Defense games. Most games require some level of strategy. This is what keeps players playing. A challenging game yet easy enough to just pick up and play is a winning combination. It is always the games with the simple concepts that I spend the most time playing TD games are great because they have a Sim-element to them. You place your towers then troops invade. Then you get to see how effective your plan of action really is.

This Tower Defense game is a good flash game for an introduction to the genre. Be warned, though. Once you begin playing, it may be hard to stop.

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