Play free puzzles, online games to make you think outside the box, games that require logical thinking, brain exercise games online for PC, Mac desktop, laptop, notebook, tablet, iPad, mobile phone. Cool strategy games, fun new brain-teaser games for kids (girls & boys), teens to play now, no download.
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Online Puzzle Games that Make You Think

Rating: 7.4/10 - 95022 votes

Play free online games that require thought, logic-based puzzles that make you think outside the box, fun brain-teaser activities for elementary / middle school students and high school teenagers, as well as for adults & seniors to enjoy.

Play hard puzzles, interactive problem solving games, challenging thinking games that involve and help to promote and improve critical thinking, creative / analytical thinking skills. Find physics-based games for the school classroom as a fun science lesson reinforcement, and to play at home with your best friends and family members.

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Fluffies is a fun, unusual and challenging puzzle game for young kids where you have to free up (untangle) a bunch of cute creatures from each other. This unusual brain-teaser activity should help to improve your concentration and observation skills. The Fluffies are a family of adorable, fuzzy little guys, but their Mom has to leave them alone for a little while. She attaches them together with string so that they don’t run off – but the problem is, they’ve got all tangled up with their strings crossed over (and this is not good)! 

It’s your job to help free them so that their Mom can send them off to bed. You've got to free up the Fluffies by making sure their strings don't cross each other at any angle. But be careful because the Fluffies are full of mischief and won’t make it easy for you.

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Play a stimulating, online chess-based puzzle game with UNLIMITED levels where you must place your pieces onto safe squares on a chess board filled with attacking opponents! Chess Minefields is an innovative, interactive chess brain teaser game and strategy survival challenge where you never play the same level twice! Your task is to place white colored chess pieces onto a board that is littered with black pieces that are attacking most of the vacant squares! Playing against the clock, you must figure out which squares are ‘safe’ from opponent pressure, and quickly place your pieces there.

Skills required: This is a fun and fast-paced visual puzzle game where fast reactions, good hand-eye coordination skills, and sharp analytical thinking skills must all be applied at speed. Basic knowledge of how chess pieces move is also essential to your chances of sustained success. You must also use logic and show a willingness to use the ‘process of elimination’. Survey the board and quickly eliminate the squares ‘under attack’ from your consideration. This requires deep concentration, focus, and stamina!

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Fun and challenging, multi-level connect the blocks puzzle game and brain-teaser to enjoy alone or to play with family and friends: Connect Me Factory is a tricky, visual and logic-based puzzler for both young children of elementary school age and Big Kids of all ages where you must move, drag, and/or rotate individual blocks until they ‘connect’ as one interlinking unit. Playable on mobile phone, tablet, notebook, laptop or desktop PC, you must attach the blocks to one another by matching and joining together the silver-colored ‘links’ that protrude from the sides of each block. Some blocks can be dragged around the play area, others are rotate-able, while certain blocks can be both moved and rotated to your desired position in the grid play zone.

Skills required: This online brain teaser game, based on a simple concept, requires sharp focus and analytical thinking skills, creative engineering skills, the imagination to see the big picture, problem-solving determination, strategy, and a willingness for good old trial and error are all important here. Note that there is only one correct solution in each level.

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Merrelus is played on a board by two players (you against the computer) who take turns. The players start with three, six or nine different color stones each. To start the game, the players place their stones on any of the available circles on the board. The second part of the game begins when all stones are placed. Players now move their stones. A stone may be moved only from one circle to another along the lines.

Stones cannot be placed or moved to a slot that is already occupied. When a player forms a mill (with three stones in a row), that player can take stone from his/her any opponent that doesn't belong to a mill. If all of the opponent's stones are inside a mill, then an exception is made, and the player can take any stone of the opponent.

You win the game by bringing your opponent (the computer program) to a position where it cannot move, or by leaving the player with only two stones. Click 'Replay' to start from the beginning or 'Menu' to return to the main menu. Before you start playing, select a board from three different variants. Choose the color of your stone as well. Then click 'Play' and enjoy the game!

If this Flash-based game no longer works on IE11 on your PC / MAC, try playing on Chrome or Firefox browser.

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Play a hard, interactive, visual brain teaser puzzle, and exercise your analytical thinking skills, problem solving determination, and more! Exorbis 2 is a highly-stimulating, sliding tile-based, puzzle game for older kids, teens, college students and adults with a massive 100 levels. Here, you must use good spatial awareness skills, strategy and creative engineering ability to slide orbs onto color-coordinated ‘nodes’ in as few moves as possible. And, if all of that isn't sufficiently challenging, there's even a cool ‘editor’ mode where you can create your own levels!

Reasons to play this tough, online problem-solving game: Exorbis 2 provides a stern exercise and test of your cognitive and analytical thinking skills. The difficulty level increases sharply as you progress, making this a very rewarding examination of your puzzle busting credentials!

Your concentration and stamina levels must be sharp, and the willingness for trial and error is very important. Mostly there is only one solution to a level, so you need to learn from your mistakes, and exhaust all possibilities.

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Re-unite sweethearts Jim and Mary in each of 20 increasingly-tricky platform levels using problem-solving skills, timing, and sharp reactions: Jim Loves Mary is a funny, platform-based, puzzle adventure game for one or two players where you must help two lovebird characters to get back together. Control both characters separately, and try to overcome the various wacky obstacles separating the cute couple (including Mary's rolling pin-throwing Mom!).

Skills required: This highly entertaining and interactive teamwork-based brain teaser game requires fast reactions, savvy key control, good observation and anticipation skills, lots of stamina and determination, and the ability to learn from your mistakes (through good old trial and error). Smart problem-solving skills and strategy also come into play in later levels when you must figure out a solution to the obstacle-strewn mazes.

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Play an intense online game that exercises and tests your mental and physical attributes: Challenge Circle is a very hard, timing and reaction speed-based skill game where you must use really fast mouse-clicking action to navigate a constantly-moving green ball through a tricky obstacle course made of adjacent circles. Here, you must take great care not to get caught in the wrong side of a circle outline (border) or to collide with obstacles.

Excellent hand-eye coordination, good analytical thinking skills, strategy, and a cool head under pressure are essential skills required for success. Prepare to be tested to your limits in this unique maze-style puzzle challenge!

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Think you’re the Puzzle Master? Well, think again! IsoBlock Madness is a challenging online puzzle game where you have to maneuver a ‘rolling block’ into highlighted squares on a 3D puzzle grid. On each level, you must use the grid to place the Red Block onto the Blue Squares (purplish) before the clock runs out. Sounds simple, but it isn’t! It’s a problem-solving, brain-teasing, puzzle extravaganza!

This fiercely tricky game will really help to get your mind working. You must try to find the solution using as few moves as possible. This game requires some patience and plenty of trial and error as well as an active understanding of physics and shapes. It even helps to exercise your creative engineering skills as you try to figure out which way to position the Block to get it to the part of the grid that you want. Think you can become the Master of IsoBlock Madness? Only one way to find out!

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Play an interesting, puzzle-based platform adventure game for older kids where you change between viewpoints in order to complete various jumping and ledge-based tasks. Vision By Proxy is a clever, brain stimulating problem-solving game where you play the role of a lost, one-eyed alien who must use the ‘vision’ of different people on Earth to find the missing part to his spaceship. Your alien hero's eye is too sensitive for the earth's atmosphere so he urgently needs to enlist the help of some humans, and substitute human vision temporarily for his own in order to navigate through each level. This really is a teamwork-style challenge where you must toggle between the different visions – and use the diverse attributes and features of each viewpoint to your advantage.

Skills required: In this tricky, atmospheric and thought-provoking platformer, your problem-solving skills are regularly tested in each level. You must use a combination of analytical and logical thinking to methodically figure out the best way to advance your alien through the level, and collect the parts needed to repair his spaceship. Fast reactions and smart keyboard control skills are also important where you have to swiftly jump from ledge to ledge, and maneuver the alien around the constantly-changing terrain.

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Use duplicate characters and expert platform jumping skills to help a little ball to escape 15 increasingly-difficult ledge-filled levels! Little Thing is a very challenging, platform-based skill game and problem-solving puzzler where you must help a lonely green ball to reach an Escape Portal in each tricky level. As well as avoiding dangerous pits and thorny spikes, you must occasionally ‘duplicate’ this little green ball, and use the resulting duplicates to your advantage for reaching higher ledges and other tasks.

Background info: ‘Little Thing’ is a rather lonely green ball character who has been stuck alone inside these difficult, confined levels. He needs your help to escape! Luckily, he has a special power that allows him to create clones of himself that can be used as stepping stones, blockages, etc.

Reasons to play this cool & ambient arcade game: If you like hard tasks, then this could definitely be described as a thinking person's game. Exercise and test your analytical thinking and strategy skills as you carefully and methodically find the solution that allows the ‘Little Thing’ (green ball) to escape each level.

Strategy to win: Good hand-eye coordination, sharp keyboard control and reaction speed are essential skills required to succeed here. On the mental side, you must have a very high concentration level at all times to work out when best to use the duplicate copies of your central character. Trial and error / learning from your mistakes is also really important. Call on your reserves of patience, stamina and determination to get the job done!

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Draw and build additional channel parts in order to ensure a falling ball reaches its basket in this challenging, interactive engineering puzzle for elementary age kids to high school students - playable on your Android or iOS mobile phone, tablet, notebook, laptop, or desktop PC!

Don't Miss is a tricky, physics and gravity-based, construction brain teaser puzzle game where you must tactfully draw bridges and other channel parts in order to direct a descending ball into the target basket. The ball falls freely through the level, and you must make sure that your hand-drawn blockades are enough to channel it in the right direction. This is made all the more difficult by the fact that you only have a limited number of ‘drawing moves’ in each level, and the target basket is quite small!

This online, HTML5, construction-based, problem-solving puzzle game should work on iOS and Android devices as well as most web browsers for PC / Mac. Test and exercise your creative engineering and analytical thinking skills, physics problem-solving determination, and your general command of building and construction principles. Alert anticipation and timing skills also come into play as you try to predict the path of the falling ball. Trial and error is also a key component toward your success – If your first attempt doesn't work, try to figure out exactly where the ball should bounce, and then make changes in your platform creation for subsequent attempts.

Controls: Simply click and drag / tap and swipe (in a line-drawing action) to create your bridges and channels. You can see how many moves you have remaining at the top of the game screen. Re-start the level by clicking or tapping on the circular arrow icon at the top of the play area.

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Play a point and click puzzle game with a puppy-related twist! Pupzzle is a challenging and stimulating brain teaser and hidden object-based game for kids where you must click on objects and clues in the correct sequence in order to solve tricky puzzles involving a cute little puppy dog! Each scenario features a set of seemingly random objects. However, clicking on the objects in the correct order creates a chain of events that continues the fun storyline! This unusual online problem solving challenge provides an interesting test of your observation, concentration and logical thinking skills. Are you ready to unleash the determined sleuth inside of you? Happy puzzle busting!

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Play an interactive, sliding tile puzzle game with 100 levels on your mobile phone, tablet, notebook, laptop, or desktop PC! Car Parking is a challenging problem-solving, strategy brain teaser game (for elementary school kids, where you must use your car as a tool to strategically push large boxes around a confined, maze-like parking lot. Featuring a simple top-down view and board-style layout, you must methodically move the crates into position on specific parking spots marked with a ‘P’. This can prove tricky as the boxes can only be pushed forward (one move / step at a time), and each of the 100 levels takes place in a very small car park where space is limited and your moves must be carefully planned.

This difficult, online, HTML5-based, strategy / problem-solving puzzle game should work on iOS and Android devices as well as most web browsers for PC / Mac. To play the game with full screen, you may have to turn your device horizontally. Each mini maze puzzle requires a combination of logical and analytical thinking skills, strategic planning, step-by-step analysis, and the ability to think outside the box – Pun intended! Patience, determination, and high levels of concentration are really important here. A willingness for trial and error is also key – You can restart levels as often as you like, and there are no time restrictions.

Tip: Move slowly in measured actions, with one arrow key click or one tap touch per move (Do not make very quick clicking or tapping actions as the game sometimes does not accept such moves as valid). When the crate is successfully accepted into its placement, it turns red in color. If the box does not turn red in its final placement, it means that the game software has not accepted your overly-swift movement into that parking position. 

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You control the button; you control the outcome! Blockoomz 2015 is a highly interactive, challenging and explosive physics and reactions-based puzzle game. Here, you must utilize smart strategy, excellent timing and smooth mouse control to blast ‘bad guy’ pink, black and grey bombs off of the game screen while simultaneously protecting the ‘good guy’ yellow bombs from harm. As Chief Bomb Expert, you must carefully decide when and where to execute each explosion.

This highly-stimulating, point-and-click arcade game requires very good analytical problem solving and creative engineering skills as you attempt to generate sufficient momentum and interaction to knock some bombs off and out of the play area. Levels are filled with platform-style hindrances as well as bombs positioned in awkward places, so a certain amount of learning through good-old trial and error is essential. A basic understanding of the effects of physics on a "suddenly disorderly environment" is also important – For example, bombs are certain to be flying through the air!

Now, let’s see how well you remain cool, calm and collected under intense pressure in this tricky, incendiary challenge!

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Ready for an intricate and absorbing puzzle, and one of our favorite games to date? Loops of Zen 3 really is a mesmerizing and extremely challenging online tile-rotating brain teaser of 35 levels that will likely keep your eyes and mind intensely occupied for hours! Suitable for older kids, high school students and grownups with a love of problem solving, your role is to rotate and manipulate the various pieces (tiles) in the game zone until you have created a series of closed loops (in this case, meaning that all circular-ended pieces share a connection body with at least one other circular-ended piece). This top quality online puzzle (with relaxing lullaby-like music in the background) requires high observation and concentration levels, creative engineering skills, logical thinking, great patience and determination, and plenty of good-old trial and error in order to succeed.

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A cool, interactive, visual puzzle of 96 levels for kids, teens and grownups to test and exercise your concentration levels, strategy and analytical thinking skills, tenacity in problem solving, and overall mental stamina - at home online or in the school classroom as a physics-based reinforcement activity.

Melty is a stimulating, gravity-based, multi-level puzzle game where you must strategically flip and rotate the game screen as well as move wooden blocks so that a block of ice (highlighted with an encased yellow star) comes into contact with a red-hot (fireball) block. In each level, you must figure out a way to free up and release the prize yellow star from its ice block by reaching a fireball block, and this can only be achieved through interacting with the game grid, and maneuvering the ice-imprisoned star around the free space.

There are no time limits, or move restrictions, or fancy power-ups. This visual brain-teaser activity simply requires patience, smart logic and strategy, as well as the ability to learn from your mistakes through lots of trial and error. Let's jump right in and flip this tricky puzzle on its head!

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Would you please help a cute, gooey slime ball to activate and reach an exit portal? Sling is a tricky, physics-based platformer and game of skill where you control the acrobatic movement of an elastic, ‘sling-able’ green slime ball. In each of the 50 increasingly-challenging levels, you must fling this friendly slime ball character (called Sling) to multiple ‘ledge grabs’ in order to open a ‘Vortex’ which you can then escape from! However, many of the ‘grabs’ are in awkward to reach places, and are obscured or blocked by obstacles.

Skills / strategy required: This challenging, interactive, multilevel skill game requires good hand-eye coordination, analytical thinking skills combined with keen problem solving determination, lots of trial and error as well as the ability to judge angles and trajectory (The curve or path followed by a flying projectile or by any object moving under the action of some force).

‘Slinging’ the green slime ball accurately can be a tricky task but the action here is very similar to the firing of cannons or archery shooting in many online aiming & accuracy-based games. A good strategy is to first plan out your route around the level – Then pinpoint the ‘grabs’ you want to reach first, and sling away!

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Snail Bob 2 is a fun and wacky, interactive adventure puzzle for kids & teens where you must use your observation skills, logic, creative engineering and strategy skills along with good timing to safely guide a friendly snail through a dangerous forest environment to his grandpa's birthday party.

In this stimulating, point-and-click problem solving activity (to play online at home or in the school classroom as a creative thinking reinforcement exercise), you must remove obstacles, create pathways, block enemies, build bridges, and more in order to see Bob safely through each level. Great patience, determination and plenty of old-school trial and error are all key to your and Bob's success. Bob may normally move along at a snail's pace but the challenges come thick and fast so be alert!

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Eliminate green balls from a confined, pinball-style game screen with accurate, ricocheting cannonball shots! Hardball Frenzy is a challenging and addicting aiming and accuracy-based ball shooting game and physics-based puzzle where you must clear the play area of green balls within a set number of shots. Utilizing accurate aiming and mouse control, the rebounding power of your silver cannonballs, and the contours of each level, you must hit and eliminate the green balls before your shot counter reaches zero. Remember that a ricochet game involves an element of luck also!

Reasons to play this online ball shooting game: This tricky puzzler is a quirky mix of pinball, billiard-style action, and also archery; games where accuracy is essential! Test and exercise your judgement of angles, visual prediction skills and problem-solving determination as you attempt to take out more than one green ball with each shot.

Strategy to win: Utilize good hand-eye coordination, smart judgement and your prediction skills as you try to imagine where the ball might ricochet to after your initial shot. Trial and error also comes into play as you make small but effective alterations in your aiming angles.

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Send a block home with smart block removals, shrewd strategic planning, and tactful mouse-clicking! Go Home Block 3 is a physics-based, problem-solving puzzle game for kids and teens where you must interact with the play area using your mouse, and cleverly remove obstacles in order to guide a hairy blue block to a wooden ‘Home / Exit Door’. Unfortunately, your block character cannot move of its own accord, and therefore needs your interaction skills to make its journey homeward. Featuring 20 increasingly-difficult levels, you must overcome a range of platform and ledge-based obstacles and hindrances in this ‘escape-the-level’ brain teaser challenge.

Skills required: Fast reaction and mouse-clicking skills are needed, with an emphasis on timing and pinpoint accuracy. Analytical thinking skills must be combined with focus, concentration, stamina, and determination. Some later levels require deep thought and strategy.

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