Pennytentiary by Eric Fuller

After months of design, prototyping, and several delays, we have finalized our first coin release puzzle, "Pennytentiary." To solve this sequential discovery puzzle, you must release the penny trapped inside.

Pennytentiary's complexity and depth rival that of our trickiest puzzle boxes. The solution is very challenging, with multiple "aha" moments to be found. Success relies upon the discovery and use of various tools to execute more than dozen confounding moves. No force, tapping, banging, or dexterity is required. Pennytentiary ships in an unsolved configuration.

This puzzle contains small parts and should be kept away from children. We recommend exploring Pennytentiary on a flat surface.