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The completely free text parser is more complicated of course... it should allow you to enter any word you want or any word combination aka sentences... and the dialog system should always find a suitable answer for that, preferably not by choosing a given dialog line option but by text lines which get constructed in reply to the player's line. Add in voice recognition and dynamic voice playback (dynamic: the computer modulates the speed, tone, pitch etc. so that you can use any word in any place of a sentence) - and you have your perfect dialog system. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />


Elgi, wake up! You can start dreaming during the night.

As for the question: I would prefer full sentences as opposed to keywords. Something like Divinity or Neverwinter Nights 2.