What are the different types of game AIs?

Let's say there were awards given for the different types of AI
programs in computer games. What different types should probably get
an award?

The two that I can think of at this moment would be Tactical AI and
Player-AI Dialogue.

Tactical AI consisting of the computer program that handles combat
against the human player.

Player-AI Dialogue consisting of the computer program that converses
with the human player.

The first one is where it appears that computer game companies spend
most of their AI effort. Their objective being to make a good AI that
gives human players a satisfying challenge in combat situations
against computer opponents and makes the computer opponents operate in
a game like how human players would operate in a game. The Tactical
AI not "cheating" by being able to know information that players
wouldn't know if they were playing the computer opponent. For
example, the computer opponent not reacting to a human player that is
supposedly hidden behind a mountain in the game thus from view of the
computer opponent.

The second one (Player-AI Dialogue) is where computer game companies
seem to spend the least amount of their AI effort. Correct me if I am
wrong, but I don't think any computer game today even has voice
recognition for combat commands. To say nothing about conversing with
human players beyond pick-n-choose menu style, where the player is
given a limited number of choices when "talking" to a game character.
In fact, I do not know of a single computer game that even uses ELIZA-
style chatbots. But, again, if I'm wrong, do correct me.

Can you think of other game AI types that would warrant an award? If
you think the above two I gave should be further refined or revised,
tell how you would have them be.

Scott
.