CubeDrift
Mind-blowing logic game, inspired by Sokoban with challenging puzzles and neat graphics with a completely new and remarkable game mechanics that you will love. Are you tired of pointless games for brainless people? Dive into the logical world of CubeDrift and solve hundreds of challenging and... This puzzle game is the end of your boredom, get it now, you will love it! ... CubeDrift is a very addictive game. ... Supports color blind users too. ... You may not only download and play level packs from other players, but also create them and share them on our website.
http://www.dextrogames.com/cubedrift.exe - 6Mb - Download - Screenshot

Mah Jong
No matter how you spell it- Mah-jongg, Mah-jong, Mah jongg , Mah Jong. A Classic Mah Jong Solitaire game! Mah Jong Puzzle is the mah jongg - like tile solitaire game for Windows. It is a fun puzzle game like mah jongg, that tests your mind. Its intuitive interface is very easy to learn, and you... Game rules is bent a bit to make it more challenging by adding a free online flash game. ... Combines the best of the ancient game of mah jongg tiles with solitaire to form a new exciting game. ... Welcome to the enchanting world of Mahjong: Journey of Enlightenment, This game has literally hours...
http://www.ababasoft.com/flash_games/mah_jong.zip - 10Kb - Download - Screenshot

Little Soldiers
Little Soldiers is a mind bending, strategic-puzzle game that places you and your compatriots on a range of challenging, classified military missions. Armed with rocket missiles, bullets, building materials, pick axes, and your own mind muscle strength, you must build carefully placed... You will be briefed at the beginning of each mission and will then follow your orders to complete your given task. ... Stay completely focused on your goal. ... You'll have to perfect your teamwork skills and decision making because it is a matter of life or death for you and your fellow soldiers.
http://www.phelios.net/files/pc/littlesoldiers.exe - 4Mb - Download - Screenshot

Little Soldiers for Mac
Little Soldiers is a mind bending, strategic-puzzle game that places you and your compatriots on a range of challenging, classified military missions. Armed with rocket missiles, bullets, building materials, pick axes, and your own mind muscle strength, you must build carefully placed... You will be briefed at the beginning of each mission and will then follow your orders to complete your given task. ... Stay completely focused on your goal. ... You'll have to perfect your teamwork skills and decision making because it is a matter of life or death for you and your fellow soldiers.
http://www.phelios.net/files/mac/littlesoldiers.sit - 4Mb - Download - Screenshot

Mindgames
An eclectic collection of games to pass the time and challenge the mind. Mindgames is composed of card, board and miscellaneous games that are primarily puzzle based and varied in objective. Highlights include a Sudoku puzzle solver and creator, unique crossword creators such as Xword, Chainmesh...
http://www.ihsan.biz/common/exe/all-setup.exe - 5Mb - Download - Screenshot

Dr. Germ
Dr. Germ is looking for a new assistant! Are you up to the task? Experiment with germeology in 4 separate game types to earn science awards. Work your way up the medical ladder and take your place beside Dr. Germ as one of the greatest germeologists of all time! ... This is a new challenging puzzle game where you can test your mind with four completly different game modes. ... The simple, but challenging, gameplay will keep you playing for hours. ... So your boss will never notice that you're playing.
http://www.intermediaware.de/uploads/downloads/DrGerm_Demo.exe - 10Mb - Download - Screenshot

Pathfinder
Challenge your logical skills with space themed puzzle game Pathfinder. Guide your space fleet back to your home base. However, the journey is filled with dangers and obstacles. Encounter planets and space debris which block your way, comets which change the path of your ships, and even vortexes... However, players need not feel intimidated by the game's difficulty as the game has a gentle learning curve. ... Pathfinder features graphics with a sci-fi theme which will be very familiar to fans of Star Trek, and appeal to gamers seeking a challenging and fun puzzle game.
http://www.mad-data.com/pathfinder/pathfindersetupdemo.exe - 3Mb - Download - Screenshot

Buboids: The 3D Action Puzzle Game
What's Buboids? It's not a clone of Tetris, Bust-A-Move, Arkanoid, or Minesweeper. Buboids is a cross between an Action game and Puzzle game. You have to play Buboids in order to understand it. There is no other game out there like Buboids and it has a totally different style of play. ... This game is simple to learn but still challenging enough for experienced players. ... To play you have to help cute purple creatures defy gravity using a steady hand and a keen mind. ... These stages will be sure to challenge players of all ages.
http://www.bluedojo.com/publisher/downloads/BuboidsDemoSetup.exe - 2Mb - Download - Screenshot

Sudoku Pagoda
Sudoku Pagoda is an amazing puzzle game. Plunge into the mystery world of ancient Japan. Enjoy beautiful design and wonderful music of the game. Your task is just like in original Sudoku to fill the board with the figures. They should be unique in the blocks, in the rows and in the columns. ... With 3 skill levels of the game Novice, Expert and Master, Sudoku Pagoda can be played by anyone. ... Challenge your logic with this really great mind teaser. ... Have a really good time playing great Sudoku Pagoda game!
http://absolutist.com/sudoku_pagoda/sudoku_pagoda.exe - 8Mb - Download - Screenshot

Igor - The Time Machine
'Igor - The Time Machine' is a game in the same genre as Boulderdash and Supaplex and will be the most challenging game you have played in ages. It requires a sharp mind to play and a genius to finish. In short, Igor is a puzzle game. Your job is to finish each level (puzzle) by collecting... Both versions include not only the full game, but also 100 large, challenging levels, a built-in level editor, multi-lingual versions, technical support and more! ... The game is also capable of playing Sokoban-type levels.
http://www.elmerproductions.com/igor/sw/Igor_demo_setup_en.exe - 6Mb - Download - Screenshot