Sequential Discovery Puzzles

Sequential discovery puzzles are a different experience from trick locks.

Instead of a single hidden mechanism, these puzzles unfold in stages. Each step reveals something new — a hidden tool, an unexpected component, a new layer of the challenge. You do not just open the lock. You work through it, piece by piece, until the whole sequence reveals itself.

This style of puzzle takes longer and requires more patience than a trick lock. The payoff is deeper. Experienced puzzle solvers often describe sequential discovery puzzles as the most satisfying puzzles they have ever solved.

The PicoLock is the most accessible of the three. Compact and surprisingly complex for its size, it is a great first sequential discovery puzzle.

The DanLock was originally designed by Dan Feldman in 1996 and has been called the best puzzle lock ever made by enthusiasts around the world. It is the one most people remember forever.

The Loki is our most challenging puzzle. 18 hours is the average solving time. Nobody gives up easily.

All sequential discovery puzzles are made from solid brass and come with a fabric carrying bag and an instruction card.

Not sure which one to pick? Read the full buyer's guide.