Do you like a challenge?

Not satisfied when things are to easy? Are you the kind of person who needs a challenge now and then? Try one of our puzzle games! In this overview you'll find challenging puzzles, brain teasers and brain breakers, quiz games, card games, strategy board games, and many more! Test your observational skills, find ways out of locked rooms using found objects and your own ingenuity, investigate cases lke Sherlock Holmes, work out strategies for chess and card games, or play one of the many variations on Mahjong we've collected for you. These must be the most addicting computer games, because there's nothing like a good puzzle to keep your mind sharp!

We like these games:Mahjong Titans, Mahjong Dimensions, Viaduct Designer, The Smurfs Mix Up, Railroad Shunting Puzzle, Monopoly, Gimme 5 Wildlife, Dog Mahjong 2, Mahjong Gardens, Mahjong Solitaire

Ultimate Idiot Test
Test your skills with The Ultimate Idiot Test! Click on the right buttons, circles, squares, and more, but don't be deceived by the tricky questions!
8 / 10
Unagi 16
Can you solve all of these little puzzles? You'll have to look carefully at the images and at what happens when you click on something. If you really get stuck you can always consult the HINTS menu to find the solution.
8 / 10
Unique IQ Test
Finish these 81 sequences with the right shapes and colours in order to find out what your IQ is in this online test. Even if you don't believe any online test can be accurate, it's still a fun challenge to play this game.
8 / 10
United States
How good it your topographical knowledge of the United States. Do you think you can name all 50 states on an unmarked map? Prove it with this fun online topography game!
8 / 10
United States SVG
In this scalable vector graphics game you can test your topographical knowledge of the united states. Do you know all the states by heart?
8 / 10
In UnitedGP you are the manager of a racing team. Can you make all the right investments in technological innovation, the right cars, the right drivers, etc.? Do what you think is needed to create a winning team!
8 / 10
Unofficial IQ Test
Test you IQ with this unofficial IQ test. The questions are funny, but don't be fooled! Read them carefully...
8 / 10
Up to the Roof
Can you find your way to the roof? Grab the key to open the doors and make your way through the right passages to get to the top of the building.
2 / 10
Vacation House Escape
Try to find the way out of the vacation house. Look around and find useful items and figure out how to use these tools to get to the exit and escape.
8 / 10
Valentine Numbers
Find the numbers in this Valentine's Day number searching game. Some will be easy to find, but others are very cleverly hidden. Can you find them all before the time runs out?
8 / 10
Valentine Puzzle
Can you put the Valentine puzzle back together again? do you have a special someone to take on long walks along the beach too?
8 / 10
Valentine's Escape the Room
Can you escape from this Valentine's room? Sove all of the hints and the puzzles in order to wrap and send the chocolates to complete your Valentine's mission.
8 / 10
Try to click away all the valentine's hearts. You can click them away in combos of three or more in this Valentine's Day bejeweled game.
8 / 10
Varia Differences
Can you find the differences between these pictures? They look the same at first glance, but a number of subtle edits have been made. Can you figure out what they are?
6 / 10
Try to get the black truck off the platform each time. You can make the cars drive and push off the other cars if you need to. Just make sure you hit the brakes on time.
8 / 10
Viaduct Designer
An evil robot company has blown up all the bridges. Can you rebuild them so that the train can safely transport goods to the other side? You only have limited funds, so build clever constructions.
8 / 10
Virus 2
The object of this strategy game is the cover as much of the field as possible with the green virus. The atoms rotate clockwise, so in addition to what chain to set off, you must also consider if the atom can be rotated that way in a single turn.
8 / 10
Vision by Proxy
Move through the level with the eyeball alien and try to find out what needs your attention. At first, you can't really see much, but that will get better soon, when you find people whose vision to steal.
8 / 10
Visiting My Grandmother
Brenda is off to visit grandma and help around the house. Her first task is to find all the lost household items. It's quite a mess, but can you spot them all?
0 / 10
Vivid Dreams 5 Differences
Can you find the five differences in each set of pictures? The images are almost identical, but not quite. Can you spot all five of the subtle edits that have been made?
8 / 10