Awe, I was hoping to see a Hadean Lands mention in the book, but it was on his “these didn’t make the book but are great” list.

The list of games written about can be found on his substack archive here: https://if50.substack.com/archive

Universal Paperclips, mentioned in the book, is a journey. What starts as a clicker game turns into so much more. It’s a free browser game, but in that old-time sense of freeware.

It’s worth mentioning the Interactive Fiction Archive, a massive catalogue of hobbyist-created text games, many based on free text game engines like TADS.

Oh wow, I vaguely remember a misspent childhood on MUDs and MUCKs. I wonder if any of them are still going…