Clever BoxMan
Clever Box Man is a fun logic and strategy puzzle board game, it's a brain teaser featuring the clever porter Box Man, it has beautiful sceneries, orphan background music and sound, more and more difficult levels with no solutions seemingly, but yes actually there are. ... This game is very easy to operate but maybe very difficult to solve, it's really a great challenge to your brain! ... WARNING: VERY ADDICTIVE! ... Fun for the whole family, encourages logical and procedural thinking, enhances problem solving skills.
http://www.8848soft.com/d1/cleverboxman_setup.exe - 632Kb - Download - Screenshot

Snowy: Puzzle Islands
New brain-teaser game stuffed with challenging levels, fascinating game objects and featuring, who else, Snowy the Little Bear!!! Actually, in Snowy: Puzzle Islands you'll have plenty to think about - transporters, conveyors, keys, teleports and other challenges. ... The game is very engaging, so expect to spend long hours in front of your PC. ... t you? ... It is too hard for Snowy to solve all these puzzles himself... ... You will help him, won?
http://www.alawar.com/submit/SnowyPuzzleIslands.exe - 7Mb - Download - Screenshot

Mystery Case Files: Huntsville (Mac)
Crime spree baffles Huntsville police! Do you have a keen eye for details? See if you can locate enough hidden clues to solve the crimes and become a Master Detective! Mystery Case Files: Huntsville provides gamers with a collection of intriguing mysteries and brain-teasers to solve. ... There are picture puzzles to ponder, strange crime scenes to explore, and much, much, more! ... With thousands of hidden clues it's a new game each time you play!
http://www.funpause.com/MCFHuntsvilleDemo.zip - 16Mb - Download - Screenshot

Amazeing
Amazeing is a realistic 3D maze walkthrough game - can you find the exit? Or will you be slimed by the evil mucus? Choose an small easy maze until you get used to the game, or boggle your brain with the huge 50x50 room single level challenge. Do you have what it takes to make it through the... Handsome pastel colors, cartoon sound effects and an original midi music score will entertain you for hours as you wrestle with this brain teaser. ... Even the mucus is configurable - make it stupid or smart, and use the radar screen to avoid it.
http://users.tpg.com.au/siordon/amaze600.zip - 661Kb - Download - Screenshot

Memonix
Brain teasers, puzzle and memory games for kid's in one pack. While being amazingly addictive and fun to play, these games can be used to improve your child's memory, brainpower, thinking and reaction. Five difficulty levels from normal to obscene plus the timer mean that the challenge will... Another good thing about Memonix is the availability of countless addons for all four games. ... They can be downloaded online for free without even leaving the game environment. ... Memonix features a pick-up-and-play interface that will take children little time to learn and start playing without...
http://www.viewizard.com/download/memx15.exe - 7Mb - Download - Screenshot

Fitznik 2
Fitznik 2 continues the adventures of the odd looking creature Fitz through another 63 levels of brain teasers tougher than the original Screaming Duck Software game Fitznik. Fitznik 2 introduces new game elements: Force-Fields that may be deactivated by placing objects on top of buttons,... Players can adjust the speed of the game to their preference. ... Fitznik 2 includes a solution mechanism. ... Players who get stuck in any level can type a password and see the entire puzzle solved by Fitz automatically.
http://screamingduck.fileburst.com/Fitznik2Demo.exe - 7Mb - Download - Screenshot