Mechanical
- 4
- Potty Puzzles
- Puzzle site with wooden assembly, burrs, wire and many other types of mechanical puzzles. (UK)
- 5
- Puzzle & Craft Factory
- Provides Puzzles, Brain teasers, Toys and Games to people of all ages and skill levels
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- Puzzle World
- Different varieties of mass produced mechanical puzzles as well as individual hand crafted puzzles and information for collectors.
- 7
- PuzzleSolver
- Solutions for the Rubik's Cube and many other mechanical puzzles. Post questions and get answers on the puzzle message board. Has a Puzzle of the Month page.
- 9
- Tavern Puzzle Collection
- Metal puzzles, created by blacksmith Dennis Sucilsky. Puzzle descriptions, and solution pages, complete with diagrams for taking apart puzzles and reassembly. Produced by Tucker-Jones House, Inc.
- 12
- Rube Goldberg Machine
- This Rube Goldberg Machine by Jacob Shwirtz turns on a blue-light thereby revealing a hidden message in 47 steps.
- 16
- Kristin's Customized Cubes
- Adds an additional level of complexity to Rubik's cubes by adding custom art and other images.
- 18
- Rubik's Cube Java Applet
- Use your mouse to solve this virtual Rubik's Cube. The Java applet allows you to scramble and move the pieces, and it will also keep track of the number of moves you have made. Interested parties may even download the applet's source code directly from the site.