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 - 108558 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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Can you help prevent a major heist from occurring? The Vault Job is a fun brain-teasing physics-based puzzle for kids that demands your full attention. The vault door is open and the greedy burglars are on the prowl trying to steal the precious treasures. Your mission in this skill-based game is to help the Good Guys close the door quickly before those dishonest thieves steal everything. The circular vault door is at the top of the screen, and the vault is in the bottom right corner. You have to remove all of the obstacles that are obstructing the path of the vault door getting to the vault. Roll, swing and bounce the vault door into place and firmly lock the vault. See how far you get, and send those intruders packing!

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Play a retro-style, online Tic tac toe game for 1 and 2 players! Tic Tac Toe: Vegas is a simple, colorful version of the classic pen and paper game - Xs and Os, or Naughts and Crosses. Play against the computer or with a friend or family member, and be the first to get three Xs or Os in a horizontal, vertical, or diagonal row on a small 3X3 space grid.

Reasons to play this straight-forward, online puzzle game: Exercise your analytical thinking, strategy and decision making skills as you work to figure out the best way to bamboozle your opponent and get the coveted 3-in-a-row of your chosen symbol. Older players and adults can re-live their classroom days while younger players can experience the fun challenge of a quick-fire, virtual tic tac toe puzzle online.

Strategy to win: As the game grid is very small, ties are a commonplace occurrence in Tic Tac Toe. This means that concentration levels must be high at all times. You must try to come up with different strategies and approaches which might trick your opponent, and force a mistake. Accurate mouse clicking is also important!

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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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Solve platform puzzles by creating and controlling dummies to mimic your movements. Fancy Wizard is a clever problem-solving game and interactive platform adventure puzzle where you must use innovative strategy to guide a red-robed wizard through a series of 18 enclosed platform levels. Your wizard can perform magical feats – and his specialty is creating a team of duplicate ‘helper dummies’ (when necessary) that can perform certain key tasks such as flipping switches, distracting enemies, forming jumping pads, and more. Your job is to carefully utilize these dummies in order to ensure your wizard makes it safely through each level!

Reasons to play this quirky brain teaser: Exercise your analytical thinking and problem-solving skills as you figure out how to exploit the unique dummy-creating magic of your wizard. Think of the possibilities!

Strategy to win: Good team management and logical strategy is the key to guiding your wizard to the Exit Door in each level. Fast reactions and solid keyboard control skills also come into play. You must be patient, determined, and ready to engage in trial and error (and learn from your mistakes!). Use dummies to reach ledges that the wizard cannot, slow down other characters by forming blockades, and get them to stand guard on special switches and door-opening buttons.

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Gravity Grid is a challenging online puzzle game where you have to match up sets of 3 colored blocks by flipping or rotating a chess board-style grid. In each level, there are jumbled-up groups of 3 colored blocks on a square game grid. You have to use your knowledge of gravity to figure out the correct way to flip the grid so that the colors match up. The problem is, you only have a certain number of moves to do this.

The grid can be moved 90 degrees to the left or right, or flipped upside-down 180 degrees. You have to choose the correct move that will connect the same-colored blocks together. Once you have all three of the same blocks touching each other horizontally or vertically, they disappear and you can progress. The levels increase in difficulty, with more groups of colored blocks being introduced.

This problem-solving activity will really test and exercise both your observational and logical thinking skills. You’ll also need to display good strategic planning abilities to figure out a solution to match up the different colors. Think you’ve got the eye and mind to master this tricky brain-teaser? Ok then Gravity Genius, bring it on!

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Are you ready to spend hours trying to solve a classic head-scratcher puzzle for all ages based on a very simple concept? If so, get ready for a long challenge that will require you to roll up your sleeves and open your mind. Coins is a tricky and addicting brain-teaser that you will want to share with your friends and family! This is a challenging online puzzle game where you have to maneuver sets of sliding wooden discs (coins) into specific positions on a board.

The objective is pretty simple – in each level, there are a number of highlighted areas that have to be filled with the available Coins. The restriction is that a Coin can only be “moved” to a placement (position) where it touches at least two other Coins at that moment – that’s the tricky part! Your number of moves are also limited. The difficulty increases as you progress, but the simplicity of the game play makes this awesome little brain-teaser extremely addicting. There are no tricks or special moves, just good, old-fashioned problem solving. Your strategic skills planning will be tested, as you have to plan two or three moves ahead in later levels. Ok – it’s time to see if you can slide your way into the record books!

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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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Play a highly-strategic version of Tic-tac-toe against a sharp computer opponent or a best friend / family member! Strategic Tic-Tac-Toe is a very good, quirky one or two-player version of the simple ‘Noughts and Crosses’ game where you must line up three Os or Xs in a row on a 3X3 grid before your opponent does. However, in this more complex version of tic-tac-toe, there are nine 3X3 grids in play at the same time! To become the champ, you must prevail in three whole grids in a row!

Skills required: This fun and challenging, interactive visual puzzle & brain teaser for kids and teens requires really good concentration, quick-fire analytical thinking skills, and fast reactions. The virtual computer opponent is not the most advanced player – but is certainly quick to capitalize on any errors that you make. Whether you are playing against the computer or in a two-player matchup against a friend, you need to be thinking ahead at all times, trying to out-maneuver your opponent through good strategy - without making glaring mistakes of your own!

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Place Tetris-style blocks into specially-designated outlines in this block-based puzzle game playable on mobile phone, tablet, notebook, laptop and desktop PC! Fancy Constructor is a challenging, multi-level, visual puzzle game for kids and teens where you must maneuver different-shaped building blocks in order to fill white-colored outlines. Blocks come in different colors, shapes and sizes.

Skills required: Like in Tetris and other construction-based brain teaser games, this interactive, problem-solving puzzler requires good analytical thinking and creative engineering skills, sharp focus and concentration, and the ability to zoom out and see the ‘bigger picture’. Good strategic planning, determination and stamina are also important as you must plan your moves in advance, and when and where to place certain troublesome blocks. Trial and error also plays a part; there is no set time limit, and you must learn from your mistakes and adjust your solutions accordingly.

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Orange Gravity 2: Level Pack is a fun and addicting, interactive ‘cut the rope-style’ game as well as a brain teasing, physics-based puzzle challenge for older kids, teens and grownups! Playing the role of a hungry little orange fruit character, you must intricately use various tethering ropes along with the effects of gravity to gobble up yellow apples, and then escape through a special hatch in each level.

Cut the rope type games have sky-rocketed in popularity over the last few years, and provide a real test of your problem-solving skills combined with your quick reactions. You must exhibit great patience, concentration, and the willingness to learn from your mistakes (as lots of trial and error is required) in order to progress. Enjoy the quirky action!

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For those who love to grind out solutions to what may appear complex visual and structural puzzles: Gridlock is an extremely hard, multilevel, sliding block-based puzzle game and highly-stimulating, brainteaser activity for older kids, youth and grownups!

In each of the 40 increasingly-difficult levels of this really tough visual problem-solving challenge, you must unlock the puzzle, and find a way to slide the blue block through the opening on the right hand side of the confined playing grid. The catch is that each individual block can only be moved either vertically or horizontally. The solution is achieved using careful thought and methodical maneuvering of the other slide-able blocks that populate the small play area.

Skills / strategy required: Creative engineering and analytical thinking skills are very important in this tricky maze-like escape game. Each level has the same concept and purpose, but all 40 levels require very sharp focus, concentration and deep thought, and provide a stern examination and exercise of your visual problem solving ability.

Great patience and determination are also required - You need a strong temperament to intricately plan and visualize each move toward each solution, and go high into the Gridlock levels. Accept trial and error as an important ally in your quest – You very likely won't complete each level with ease, and must learn from your mistakes in order to progress (so good memory skills sure come in handy!).

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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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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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Jigsaw Fantasy: This is a time-based puzzle game where you need to find pairs of matching tiles. Simply choose a number of puzzle pieces (12, 24 or 36) by moving the star with your mouse and press “go!” Remember that the bigger number you choose, the harder it will be. The whole picture will be shown to you momentarily and then you will have to unscramble it. Use your mouse to move the puzzle tiles around and put them in the correct order. You can push the “Finish Puzzle” button if you find it too hard to finish yourself. Improve your result by assembling the puzzle faster.

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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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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Play a very difficult, shape-folding, brain teaser game playable on mobile phone, tablet, laptop, notebook, or desktop PC! Logicheck is a tricky, logic-based, shape-shifting, interactive puzzle game for kids, teens and adults where you must fold (stretch or reduce in size) green shapes to fit perfectly over blue shapes by dragging circular nodes around the play area. Each of the 37 increasingly-difficult levels has a static blue shape configuration over which you must place the movable green shapes as quickly as possible. The level is only complete when there is no green shading hovering over into the white areas, and the vast majority of the blue shapes are sufficiently covered. The faster you complete the level, the more points you earn!

This interesting, HTML5-based, multi-level, logical thinking puzzle & shape folding skill game should work on iOS and Android devices as well as most web browsers for PC / Mac. Logicheck provides a stern mental test and exercise of your problem solving and analytical thinking skills, creative engineering abilities, spatial awareness, determination and willingness to use trial and error to your advantage. Patience as always is important – It may take you a while to drag the green shapes into the correct configuration, especially in later levels when the puzzles are more complex.

Controls: Move the green shapes around the play area by mouse clicking or screen tapping on the circular ‘nodes’ that cling to the corners of the green shape areas. Stretch or reduce in size to fold to the required fit (Your transparent green shape must perfectly match the blue shape underneath).  

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Play a very tricky, multi-level, sliding block brain teaser game on your mobile phone, tablet, notebook, laptop, or desktop PC! Free The Key is a highly-stimulating, ancient Egyptian-themed structural puzzle game and visual problem solving challenge (for elementary age students, high school teens and adults) where you must methodically move sliding blocks around a confined (chamber) grid in order to create a path to ‘free the key’ and guide the Golden Key block out through the right hand side of the play area. All 40 levels follow the same concept where the different slide-able blocks can only either be moved horizontally or vertically, and the working space between blocks is minimal!

This online, HTML5-based, sliding puzzle / maze escape-style game should work on iOS and Android devices as well as most web browsers for PC / Mac. Skills required include alert analytical thinking, common sense logic, visual problem-solving skills, creative engineering skills, great determination, patience, and a willingness for trial and error as you strive to figure out the solution to the increasingly-challenging puzzles. 

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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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