"Dimity Jones In Puzzle Castle: An Electronic Escape Novel in Eighty-Nine Ciphertexts is a (mostly) fictional story, contained in a single text file, that requires the reader to solve puzzles as they go along, and to use each chapter's solution as a key to decipher the next. Think: escape room in the form of a novel - or, as one reader put it, 'Interactive Fiction meets Advent of Code.'
My wife, the author, passed away six years ago. This is not the last thing she wrote, but it is the most unusual, unapproachable, and personal of her major works. It is also, as the only novel of hers that I cannot breeze through in an afternoon (and despite my unflattering appearance in it), my favorite.
Though Dimity Jones was left unfinished, and perhaps abandoned, at the time of my wife's death, its elements were all there, on her hard disk, awaiting only a final compiling. My contribution to this text has therefore been little more than that of an occasional copyeditor (my wife was a meticulous speller and self-proofreader) and playtester.
(From chapter 66: I release this work in its entirety to the public domain. Do with it as you will; but neither take nor give any money for it. May the likes of Brad never get their meaty little manicured hands on it.)"
Helena's Adventures in Looking Land, by Joel Marler. A Tunnels & Trolls Solitaire Adventure. A5 format. (a Twine version is in games/twine/Helenas_Adventures_in_Looking_Land.zip)
Mines version 1.1, a randomly generated maze exploring game, by James L. Dean, implemented as Javascript within an Adobe PDF file. (versions for other systems can be found in games/pc/CMines.zip, games/java/JMines.zip, games/java/AndroidMines.zip, games/zcode/mines.z5, games/calc/mines_casio.zip, games/calc/mines_hp50g.zip, and games/calc/mines_ti.zip)
Portrait of a Troubled Artist, by Joel Marler. A Tunnels & Trolls Solitaire Adventure. A5 format. (a Twine version is in games/twine/Portrait_of_a_Troubled_Artist.zip)
THE AMAZING CHOICE ADVENTURE!, by Mollycule. (a Twine port is in games/twine/taca.zip)