Twisty Puzzles All kinds of odd shapes of 3D puzzles in addition to the usual cubes. http://Byrden.com/puzzles/

Livecube Puzzle with millions of combinations. Requires Flash. http://www.livecube.com/

Bubble Trouble Rearrange the 3D cluster of bubbles by moving one bubble at a time into the empty space. (Like a 3D sliding picture puzzle) http://www.geocities.com/SiliconValley/Lakes/8620/bubbletrouble.html

Rubik's Cube Java Applet Scramble the colours then try to right them again. With mirrors to see the back of your cube this modern classic puzzle works very well on the web. http://www.schubart.net/rc/

Rubik's Puzzles A collection of puzzles by Erno Rubik, creator of the Rubik's Cube. http://www.dotsphinx.com/rubik/

The K-Ball 3D logic puzzle featuring 3, 8, and 26 segment versions. Requires Flash. http://www.sphere-mania.com/

Triasphera Online Java version of the classic Rubik's Cube logic puzzle. Play includes time and number of turns used. http://www.triasphera.com/cube/

Aard 3D Puzzles Offers three online puzzles in various shapes including cube, pyramid, and diacube. Solve by twisting each shape to match colors on all sides. Requires Java. http://user.tninet.se/~ecf599g/aardasnails/java/PuzzleApplet/webpages/index.html

VirtualCube Version of Rubik's Cube offering animated step by step instructions to help solve the puzzle. Available online or as a freeware download. Also offers a Java version of the Square-1 puzzle to scramble and play. http://members.rogers.com/cheong.gan/vcube/

Lateral Thinking Puzzles List of twenty classic puzzles and solutions. http://rec-puzzles.org/lateral.html