Caltech Puzzle Hunt

Caltech Puzzle Hunt usually refers to Caltech Puzzle Hunt 2018, a large puzzle hunt consisting of about 80 puzzles run by members of Team To Be Named Later. There are plans for a sequel, though no release date has been announced yet.

A separate group created Caltech Puzzle Hunt 2016, a small puzzle hunt consisting of 5 puzzles and a meta, as well as a single standalone puzzle in 2017.