Four vertices with three lights each. These can be switched by rotation the whole puzzle. These changed are used to play a number of different games.

• Inventor: D.C. Miffitt, A. Tortola, C.S. Sebor, R.L. Halliday
• Mechanism: Electronic
• Patents: US4957291
• Producer: Venture Technologies, Inc. (North Billerica, MA)
• Year: 1989
• Original Price: $0.00 USD
• Current Price: $17.67 USD

An electronic game that includes a main body that consists of four panels assembled to form a four-sided pyramid having four vertexes. Each vertex serves as a node for supporting a light which may illuminate a plurality of different colors. Digital circuitry defines a color state vector at each node by illuminating one or none of the colors. Control circuitry connected to the digital circuitry is used for altering the color state of at least one of the lights as the tetrahedron is rotated. In one game, the color of the node brought to the top position changes in the color change pattern established by the color state vector. A player rotates the tetrahedron in an effort to figure out the pattern of color changes. Once the pattern is deciphered, the player makes additional rotations to achieve an object of the game such as having each vertex of the tetrahedron lighted red.
Edge length: 150 mm
Weight: 222 grams

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

	Sale Date	Price (USD)	Sale Type	Condition	Package Condition	Notes	Contributors	Edit
	Jun 12 2002	$31.68	eBay Auction	Good	Missing	None	Sandy
	Jul 21 2002	$14.51	eBay Auction	Average	Missing	Included instuctions.	Sandy
	Nov 5 2002	$10.50	eBay Auction	Good	Poor	Crushed cardboard box.	Sandy
	Apr 8 2003	$18.50	eBay Auction	Good	Missing	None	Sandy
	Jun 15 2003	$10.49	eBay Auction	Good	Missing	None	Sandy
	Jul 7 2003	$19.95	eBay Auction	Good	Missing	None	Sandy
	Sep 29 2004	$18.07	eBay Auction	Average	Missing	None	Aleksey
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Thank you to the following people for their assistance in helping collect the information on this page: Joshua Bell, Rod, Colton.

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