Browser Based
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.
Caught At Work Productions
Offers a new brain teaser each Thursday, plus archive of past puzzles.
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.
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.
Showing 20–20 of 40 results