Markku Eskelinen

Secret agency is at issue in Frasca's response, which denies the application of Aristotle to the open-ended interactivity of gaming.

Narrativists vs. ludologists, material vs. formal constraints: Michael Mateas replies by identifying actors' roles in each division.

J. Yellowlees Douglas adds more titles to Eskelinen's catalog of limnal games.

Richard Schechner remembers the real-life side of interaction.

Stuart Moulthrop complicates the idea of self-contained games.