Wow, this is a pretty cool #GameJam idea !
Gaming Like It's 1924 is a jam where you must make use of a work first published in 1924, and thus that entered the public domain as of yesterday, according to US law !
Among those work are music pieces by George Gershwin, novels by Agatha Christie, or artworks by Paul Klee, and a lot more. #gamedev
This is a private instance. Sorry.