KEN KEN - Like Sudoku, even though difficulty may vary from puzzle to puzzle. Good luck! http://kenken.com/playnow.html
GEARS - You're the ghost in the machine in this strategy game of grinding action. Align the moving gears to get everything turning in the right direction. Each level gets more difficult, so be sure to get your brain in Gears. https://www.coolmath-games.com/0-gears-and-chains
BRAINBASHERS - Welcome to this unique collection of puzzles, games and optical illusions. http://www.brainbashers.com/
MAZES GALORE! These can be difficult and fun! Check out the links at the bottom of his page for other fantastic maze sites. http://www.logicmazes.com/
IN QUEST OF THE PLATINUM PIGGY - This is an online CHOOSE YOUR OWN ADVENTURE story. You decide where the story goes next! http://amby.com/reading/quest/
BATTLESHIP - Great strategic/graphing war-game of the sea. http://www.primarygames.com/puzzles/strategy/battleship/index.htm
PUZZLE EXPRESS - Here you will find all kinds of puzzles, word games and solitaire games to play online or on your computer. http://www.puzzlexpress.com/index.html
CLICK MAZES - Lots of unique interactive puzzles and mazes found here, and a few other things besides. Click on the links below to find out more. Enjoy, and let me know how well you survive! http://www.clickmazes.com/
MORE GREAT THINKING GAMES - Even the opening page is fun to look at. http://www.gamepuzzles.com/pparlor/puzzleparlmm.html
TEXT TWIST 2 - Form words from the letters provided. Find at least one word that uses all the letters to continue playing. Find all of the words for bonus points.
https://www.mindgames.com/game/TextTwist+2
JIGSAW PUZZLES GALORE! http://jigzone.com/
RIDDLES AND MORE http://www.justriddlesandmore.com/
MANCALA SNAILS - It's like mancala - but with snails! Move those slugs round the board and fill that jar. Check the rules, plays different (and WAY better) than how most of you play Mancala. http://www.rocketsnail.com/mancala/
GAMES FOR THE BRAIN - A wonderful site filled with a ton of cool thinking games like Dragger, Counterfeit, Oooze, Rotate, Masterpieces, Mastercards, TwinCol, MineHunter, Crime Scene, What Was There?, TriviaNut, Guess the Flag, Marsmoney, Memocoly and more! Thanks to Yu Hong for recommending this site! http://www.gamesforthebrain.com/
HIDDEN OBJECTS - Play the best free Hidden Object Games online with hidden
clue games, hidden number games, hidden alphabet games and difference games.
https://www.hiddenobjectgames.com/Hidden+Objects
VECTOR PARK - This is a strange and magical place. Your job is to bring it to life with clever use of your mouse. Once you've figured out how to make it through to the world, the fun really begins. Clue - for this game you must be patient and use your mouse to explore. http://www.vectorpark.com/park.html
LEVERS - A tricky game where all you have to do is, well, hang up the things. Gets tougher as it goes. http://www.vectorpark.com/levers.html
HANGAROO - Basically, it's hangman with a sarcastic kangaroo. http://www.miniclip.com/games/hangaroo/en/
THE WORLD'S HARDEST GAME - I can't even get past level one. Yet. http://theworldshardestgame.net/theworldshardestgame.htm
RUBIK'S CUBE - Java Applet featuring a complete 3D model of Rubik's Cube: Rotate it, twist it or take it apart to see how it works. http://www.randelshofer.ch/rubik/virtualcubes/virtual_rubik_en.html
PLASTELINA LOGIC GAMES - FUN interactive logic games like "Can you help the three cannibals and the three missionaries to get across the river." Fun! http://www.plastelina.net/
YETI BASEBALL - Can you beat Evan's score of 323.5? Can you even beat Christine's score of 0? Ha.
http://www.blifaloo.com/games/yeti.php UPDATE #1 (May 2007): Maslyn TIED Evan's high score. Can ANYone actually top that score? UPDATE #2 (May 2007): Lawrence Pan also tied the high score. UPDATE #3 (February 2011): Mahesh Murag has the highest score of 323.3! UPDATE #4 (March 2011): Justin Chen now owns the highest score of 323.5!!
STUNT PILOT - Be the best Stunt Pilot and complete all the courses without crashing! http://www.miniclip.com/games/stunt-pilot/en/
RIDDLE CHALLENGE #1 - This will drive you nuts. In fact, you probably won't figure it out, without a ton of help! It's a series of riddles, each one getting more challenging than the one before it. Use the whole page for each puzzle to look for clues, not just what appears to be the actual puzzle. Some clues and hints are hidden. Tools that might help: google, thesaurus, dictionary. Good luck, you'll need it! http://www.blifaloo.com/puzzles/agree/1agree.php
RIDDLE CHALLENGE #2 - Here is part two of their riddle challenge. I bet you didn't even figure out the first one. Ha! http://www.blifaloo.com/puzzle2/first.php
ACTDEN TUTORIALS - Technology class online tutorials. http://www.actden.com/