The requirement for the April 2017 24-hour contest is "puns":
https://boardgamegeek.com/thread/1757080/24-hour-contest-april-2017
Tips & Resources for Board Game Designers
The requirement for the April 2017 24-hour contest is "puns":
https://boardgamegeek.com/thread/1757080/24-hour-contest-april-2017