3-D Reversi:

Battle for control over the board by taking your opponents pieces when you have a piece on two sides of them.

Math Playground

Animal Mahjong:

Try to match all the tiles throughout all 10 layouts.

http://www.sheppardsoftware.com/braingames/mahjong/mahjong.htm

Blox Forever:

Can you get your brain around matching all of the blox together to clear each level?

http://www.miniclip.com/games/blox-forever/en/

Burning Rubber:

The skill is to put the jigsaw back together by 'swapping' pieces using pattern, color and shape.

http://www.primarygames.com/puzzles/swappers/burningRubber/index.htm

Chocolate Pipe Madness:

Design a route for the chocolate to flow by organizing the pipes correctly.

http://www.primarygames.com/arcade/wonka/chocpipes/index.htm

Eight Letters:

The aim of the game is to gain points by creating words from the selection of eight letters given to you on-screen.

http://www.eastoftheweb.com/cgi-bin/top_scores.pl?game=eight

Entangled Objects

In this game, you see three entangled objects, like flowers, fruit, animals, geometrical figures, or amoebas, which taken together make up a more complex figure. These three entangled graphical objects are compared to a multiple choice of similar or different objects that are possible components of the complex entangled figure. You must choose the one that is part of the entangled figure

http://www.happy-neuron.com/games/ads.php?gameid=111&screen=1024x768

Fantastic Contraption Game:

Try your hand at moving objects from one area to another.

http://www.fantasticcontraption.net/

Four Piece Tangram Puzzle

The object of this puzzle is to arrange four tiles to form the given shape. This activity provides excellent practice for the development of spatial reasoning skills. You have the option to enter your name on the high score board if you'd like.

http://www.mathplayground.com/fourpiecetangram.html

JigZone

JigZone is an online Jigsaw Puzzle where you choose the level of difficulty from a simple 6 piece cut to a challenging 247 piece cut.

http://www.jigzone.com/

Pharaoh’s Treasure:

You have to find blocks of four tiles which mark the edge of a rectangle.

http://www.schooltimegames.com/Social_Studies/Pharaohs_Treasure.html

playwithyourmind.com

Play With Your Mind features over 50 original online brain games and mind puzzles.

http://playwithyourmind.com/category/online-brain-games/

Sliding Block Puzzle

To play this interactive online slider puzzle, slide the tiles to reassemble the scrambled picture.

http://thinks.com/java/slider3/index.htm

Stackopolis:

A game of moving tiles to fit the 3D design presented at the bottom of the screen against the clock.

http://www.miniclip.com/games/stackopolis/en/

Storyman:

An internet version of hangman with lots of topics to choose from.

http://www.eastoftheweb.com/cgi-bin/top_scores.pl?game=storyman

Sudoku

The aim of the sudoku puzzle is to insert numbers in the boxes to satisfy only one condition: each row, column and 3x3 box must contain one each of the digits 1 through 9

http://thinks.com/daily_sudoku.htm

Super Twist Text:

Rearrange the letters to make as many words as you can in the allotted amount of time.

http://www.gamehouse.com/online-games/super-text-twist-online

Think.com

Mastermind Game

http://thinks.com/java/mastermind/mastermind.htm

Traffic Control

The aim of this game is to control the traffic lights so that as many cars as possible can pass from one side of the screen to the other.

http://users.netrover.com/~mary/traffic/traffic.htm

Trivia Games

Play these fun and free trivia games to find out what you know about famous quotes, world history, names, music, animals, and science.

http://thinks.com/trivia/index.htm

Word Box:

The goal of this word game is to arrange the letters into a grid such that you make as many vertical and horizontal words as possible.

http://playwithyourmind.com/online-brain-games/word-games/wordbox/