What are the most common AI systems implemented in Tower Defense Games

Posted by the_Dan on Game Development See other posts from Game Development or by the_Dan
Published on 2012-11-19T21:08:35Z Indexed on 2012/11/19 23:24 UTC
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I'm currently in the middle of researching on the various types of AI techniques used in tower defense type games. If someone could be help me in understanding the different types of techniques and their associated advantages.

Using Google I already found several techniques.

Random Map traversal
Path finding e.g. Cost based Traversing Algorithms i.e. A*

I have already found a great answer to this type of question with the below link, but I feel that this answer is tailored to FPS. If anyone could add to this and make it specific to tower defense games then I would be truly great-full.

How is AI most commonly implemented in popular games?

Example of such games would be:

Radiant Defense
Plant Vs Zombies - Not truly Intelligent, but there must be an AI system used right?
Field Runners

Edit: After further research I found an interesting book that may be useful: http://www.amazon.com/dp/0123747317/?tag=stackoverfl08-20

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