A Twine-like idle game about creating Skynet, posted for free online.
Found on the front page of Hacker News on March 25, 2020: https://news.ycombinator.com/item?id=22685011
It's pretty well-designed for this genre. Probably ate up an hour or two, with a fairly small amount of sitting and waiting. Doesn't depend as much on the appeal of ever-increasing numbers as it does on revealing new dimensions to its mechanics; and different parts of play seem more interlinked than, say, Universal Paperclips.