Inform is a system for creating works of interactive fiction, designed by Graham Nelson. It includes a programming language with syntax that resembles natural language.

Here are some code examples from the documentation, as a taster:

Inside from the Meadow is the woodcutter's hut.

On the table is a folded newspaper.

A face is a kind of thing. A face is part of every person.

For an introduction, I’d recommend reading Inform 7 Concepts and Strategies by Allison Parrish (2020).

Inform is being released as open-source software, as part of a long-term project to overhaul the codebase. It’s being published as a literate program – you can read documentation which is essentially the codebase itself, formatted for readability. More context on this project: