Chockablock  
   Java game in which the player tries to score points by filling up 3 by 3 squares on a grid using tetris style pieces. Try to make the high scores list.
   http://www.loquax.com/chockablock/

Rockz  
   Escape the caves with as many diamonds as possible, while avoiding falling rocks and flying creatures in this free Java game.
   http://rockz.co.uk/

Facie!  
   A game about feelings and intuition, the object is to make Facie smile with the least moves possible. Playable on the Web or mobile phone, and includes the ability to create a game for others to play.
   http://www.facie.com/

ADDiction  
   Solve each Java-based puzzle by swapping pairs of adjacent numbered tiles whose sum is a multiple of 3 or 5. Available for play online, or download.
   http://www.geocities.com/TimesSquare/Labyrinth/2288/add/index.html

Colors  
   Try to line up five matching colored chips for removal, while the computer adds extra chips to the board randomly after every move. Use strategic skills to play for high score in this online Java puzzle.
   http://www.geocities.com/SiliconValley/Park/5199/colors.html

Rolling Cubes  
   Roll eight half black and half white cubes around a 3 by 3 grid until you have reversed the colors.
   http://www.righto.com/java/rollingcubes.html

Sokoban  
   Tidy up all the crates of mail.
   http://www.pimpernel.com/sokoban/

Brainwave  
   Determine the shape that doesn't fit in this series of ten visual logic puzzles. Solve all ten and get a top 5% brain award.
   http://www.wognum.se/brainwave/

Lucas' Problem  
   Solve the ancient puzzle where you have 4 black and 4 white counters in a line and a space in between them and you need to swap their positions.
   http://www.bestpages.com/homepage/puzzle/

JamesBondNews.com  
   Police interrogation logic puzzle. Must submit email address to receive the solution.
   http://www.jamesbondnews.com/

Dot 2 Dot 4 Fun  
   Online version of the classic Connect the Dots game. Offers a choice of pictures in categories that include people, buildings, and animals. Requires Shockwave plug-in.
   http://www.dot2dot4fun.co.uk/

Fragmind  
   Try to place a set of colored fragments on a grid so that each column of the grid contains only one color in this online Shockwave puzzle game. May choose number of columns and colors to be played.
   http://www.fragmind.com/

Set Game  
   Online versions of Set and Quiddler mathematical and word card games. Features a daily puzzle and contest.
   http://www.setgame.com/

Cryptarithms  
   Features online brain teaser puzzles in which the digits of a sum are replaced with letters or other symbols. Find the correct numerical digits for each letter to solve the puzzle.
   http://www.cut-the-knot.com/cryptarithms/st_crypto.html

Queue  
   Click buttons to push shapes onto a checkerboard grid in this Flash-based puzzle game. Objective is to cover tiles with a piece of the matching shape. Offers 50 levels of increasing difficulty, and a high score list.
   http://www.gamekitchen.com/games/queue/

Cross Rings  
   Arrange the chain links in alphabetical order to solve this Java puzzle.
   http://brightworld.com/CrossRingsPuzzle/

Hexcite  
   An online version of a board game where you try to place all your pieces a hexagonal board. Play against the computer.
   http://www.hexcite.com

The Lateral Puzzles Forum  
   Set or solve lateral thinking puzzles. Includes a selection of current and already solved puzzles.
   http://www.lateralpuzzles.com/

Masterword  
   Try to guess the 4 letter word the computer is thinking of in no more than 10 tries.
   http://www.masterword.co.uk

SameGame  
   Goal is to remove all color tiles from the field, by removing connected groups of the same color tiles.
   http://www.yook.de/samegame/

Misronet.com Puzzles  
   Offers free interactive logic puzzles including solutions and tips on how to solve brain teasers.
   http://www.misronet.com/puzzles01.htm

Trun's Puzzles  
   Free online jigsaw puzzles and games.
   http://members.aol.com/trun40

The Stone  
   Information about the internet's mystery game, The Stone.
   http://www.netfysh.com/thestone/

Lightsout Cube  
   An online version of Tiger Toy's Lightsout Cube and links to other Lightsout puzzle sites.
   http://www.gersolutions.com/lightsout

Diamond 16 Puzzle  
   Rearrange rows, columns, and quadrants in a 4x4 array of 2-color squares to solve the puzzle and to make a variety of symmetric designs.
   http://m759.freeservers.com/puzzle.html

The Problem Site  
   Solve math problems, brainteasers, word games and riddles. Featuring a selection of free puzzles to help develop problem solving and lateral thinking skills.
   http://www.theproblemsite.com/

Blueee's Number Puzzle  
   Online game that displays a random choice of one of 15,000 different math puzzles. Six nested equations are shown with icons instead of digits. Find the digits to solve the puzzle.
   http://www.tote-taste.de/X-Project/index.html

Dots and Boxes  
   Java applet playing at one of three levels of difficulty, with variable board size.
   http://www.well.com/user/argv/java/dots.html

PING  
   Manuever balls into green chutes to score points in this online puzzle game that is a test of physics and strategy skills. Complete levels by rebounding a ball into eight chutes before time runs out.
   http://www.smerc.com/ping/

Caught At Work Productions  
   Offers a new brain teaser each Thursday, plus archive of past puzzles.
   http://www.caughtatwork.net/

Tilt Puzzles  
   Labyrinth maze game, tilt the board to place the squares on their targets.
   http://www.clickmazes.com/newtilt/ixtilt.htm

Celtic Solitaire  
   Online puzzle game in which the player must form lines of five or more color marbles to score points and enter the top 20 players list.
   http://www.i-taneva.com/workshop/solitaire.html

Bilingual Games Online  
   Various puzzles in French and English.
   http://www.quass.com/dino/nextpage.htm

SegPlay  
   Play to beat the clock in this online version of a paint-by-number puzzle in Java. Features a selection of categories and images.
   http://www.segmation.com/SegPlayChoose.asp

JC Lava  
   Online game of logic in which players place pieces in rows and attempt to surround four of the opponent's pieces to win. Play is available for two players or one player against the computer.
   http://jarci.w.interia.pl/

Jotto  
   Puzzle game in which the computer chooses a secret English word with five different letters. The object of the game is to use logic to try and guess that word through a process of elimination.
   http://ourworld.compuserve.com/homepages/easysurf/menuj.htm

AntWorld  
   Play an ant that must collect apples, push stone blocks, catch butterflys, avoid deadly spiders, and exit each puzzle in this Java-based logic game. Offers multiple levels of play at three difficulty levels.
   http://www.asccompany.com/games/antworld/index.asp

The Shrapnel Code-Breaker Challenge  
   Series of five puzzles of increasing difficulty which are designed to test code breaking skills.
   http://myweb.tiscali.co.uk/shrapnelchallenge/

Contamination  
   Take over the entire board by contaminating enemy pieces in this online Java game that combines strategy and puzzle elements. Play against the computer or up to two other players.
   http://student.dei.uc.pt/~pamaro/puzzle.html

NIM  
   Two player game in which players remove matchsticks in an attempt to force the other player to remove the last one. Played online against the computer or downloadable.
   http://www.neil-mackenzie.com/nim/

CombinationLock.com  
   Select a numerical sequence based on clues. Has a hall of fame.
   http://www.combinationlock.com/

HopSkip  
   Move the red square along the game board to step on all the green squares and make them disappear. Create a new board or play on a board created by other players.
   http://awe113.tripod.com/

Guessmaster.com  
   Offers a variety of guessing games.
   http://www.guessmaster.com/

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

Philosophy Games  
   A series of philosophical puzzles to challenge the mind.
   http://www.philosophersnet.com/games/

Quadrix  
   Click on squares to change the color of neighboring squares and bring the entire grid to one color in this JavaScript logic puzzle.
   http://jumk.de/quadrix/quadrix_e.shtml