An MIT staff member writes, "The annual MIT Mystery Hunt, begun 30 years ago, is held in January during IAP. Groups of students team up to solve a series of puzzles that then lead to a metapuzzle. The solution to them leads them to the location of an Indian-head penny somewhere on campus. The winners invent the next year's puzzle.
"This is an immensely clever contest invented by students and fueled by their love of challenge and brainteasers. By now, it's a time honored tradition."