Hintikka is known as the main architect of game-theoretical semantics and of the interrogative approach to inquiry, and also as one of the architects of distributive normal forms, possible-worlds semantics, tree methods, infinitely deep logics, and the present-day theory of inductive generalization.
He has authored or co-authored lots of essays that have appeared in many languages.
Five volumes of his "Selected Papers" were published by Kluwer.
Jaakko Hintikka has edited or co-edited a lot of volumes and authored or co-authored a lot of essays.
A comprehensive examination of his thought appeared as the volume The Philosophy of Jaakko Hintikka in the series "The Library of Living Philosophers."