For anyone interested in Infocom and the Z-machine, Graham Nelson's "The Inform Designer's Manual, edition 4" [DM4] is an indispensable resource. In particular,

For anyone interested in Infocom and the Z-machine, Graham Nelson's "The Inform Designer's Manual, edition 4" [DM4] is an indispensable resource. In particular, it includes a detailed chapter on the history of interactive fiction, an edited version of Nelson's earlier article "The Craft of Adventure." [DM4]: http://inform-fiction.org/manual/ http://inform-fiction.org/manual/