Richard Garriott says:

While I am a believer in the 4 broad player types which I will describe as Explorer, Achiever, Socializer and Dissident - and TR has features to support all of them - TR is a more casual game than traditional MMPs such as UO. We placed a premium on creating a game where you can log in, play for 30 minutes to an hour, complete a mission, log out and feel great about the experience.
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The "Dissident" above is commonly called "Player Killer". But you can't speak that rude in investors presence.

Should remember that trick.