Hard-Boiled Wonderland is a 1-month long, IF game jam that is centered on the noir genre.
The definition of noir, according to the Merriam Webster’s Dictionary is: having a bleak and darkly cynical quality of the kind associated with hard-boiled crime fiction and film noir.
You can use any engine you want. It doesn’t need to be based off Hard Boiled Wonderland and the End of the World. And you can finish projects you never finished before as long as it fits the theme.