This means keeping many trails open at once, inevitably requiring a fairly 'parallel' plot. This plot should be discovered rather than announced, so show, don't tell.

Players very widely disagree with me about what's hard and what's easy. and in a way, 'I won, but it was a fight' is the best compliment a game can receive.

I try to make puzzles range all the way from easy to hard, and to leave many open at once.

Writing a really general parser is a major but different undertaking, by far the hardest points being sensitivity to context and resolution of ambiguity.

I'm rather pleased with the new manuals. I see Inform now as a gauche young adult, having got past the stage of growing out of his shoes every few months.

Then in my early teens, when the home computer bubble was blowing, I had one of the first, an Acorn Atom, and used to write primitive adventures on that.

The 'interactive fiction' format hasn't changed in any fundamental way since the early 1970s, in the same way that the format of the novel hasn't since 1700.