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.
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.
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.
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.
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.
Clicker - - Remove all of the black squares by toggling colors with each click.
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.
CombinationLock.com - - Select a numerical sequence based on clues. Has a hall of fame.
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.
Cross Rings - - Arrange the chain links in alphabetical order to solve this Java puzzle.
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.
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.
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.
Dots and Boxes - - Java applet playing at one of three levels of difficulty, with variable board size.
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.
Hexcite - - An online version of a board game where you try to place all your pieces a hexagonal board. Play against the computer.
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.
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.
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.
The Lateral Puzzles Forum - - Set or solve lateral thinking puzzles. Includes a selection of current and already solved puzzles.
Lightsout Cube - - An online version of Tiger Toy's Lightsout Cube and links to other Lightsout puzzle sites.
Masterword - - Try to guess the 4 letter word the computer is thinking of in no more than 10 tries.
Misronet.com Puzzles - - Offers free interactive logic puzzles including solutions and tips on how to solve brain teasers.
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.
Philosophy Games - - A series of philosophical puzzles to challenge the mind.
PING - - Maneuver 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.
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.
Quadrix - - Click on squares to change the color of neighboring squares and bring the entire grid to one color in this JavaScript logic puzzle.
RiddleScape - - A ranking and competition system based on a select number of puzzles.
Rockz - - Escape the caves with as many diamonds as possible, while avoiding falling rocks and flying creatures in this free Java game.
Rolling Cubes - - Roll eight half black and half white cubes around a 3 by 3 grid until you have reversed the colors.
SameGame - - Goal is to remove all color tiles from the field, by removing connected groups of the same color tiles.
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.
Set Game - - Online versions of Set and Quiddler mathematical and word card games. Features a daily puzzle and contest.