Play free brain teasers, online games, puzzles for free, no download: Brain teaser PC games, fun problem solving games that require thought, that make you think outside the box. Mind games for kids (girls and boys), teens, adults, seniors. Cool new strategy games for PC, brain teaser flash games for the family.
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Rating: 7.4/10 - 228927 votes

Play fun and interesting logic games and online puzzles that require thought, discipline and determination, and encourage you to think outside the box. Find problem solving games and brain teaser activities for elementary school, middle and high school students, adults & seniors to enjoy and play now online.

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Shadow Adventure is a very challenging and innovative run and jump-based action game and brain teaser where you must collect three carrots and reach the White Flag safely while avoiding your hazardous, spawned ‘shadow bunnies’ at all times. These pesky shadows duplicate your bunny rabbit character's movement; they enter the fray when you collect carrots, and are out to stop you from reaching the flag. You must strategically maneuver your lead bunny in a way that cleverly dodges these naughty baddies while they repeat your earlier actions.

Skills required: This fun platform arcade game and tough problem-solving puzzle requires smart analytical thinking skills and good short-term memory to evade your shadow bunnies at all cost. Sharp reactions, keyboard control and anticipation skills are all vitally important here. Learning from your mistakes (through lost of trial and error) also comes into play to help discover logical steps toward collecting the carrots and reaching the White Flag.

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Pou Adventure Time is a challenging, interactive, physics-based puzzle game for kids and teens where you must interact with the game screen in order to unite two quirky alien blob characters! Tilt platforms, maneuver obstacles, remove hindrances, position teleport devices, and generally do whatever it takes to ensure the male Pou character comes into contact with his beloved female counterpart!

Skills required: Inspired by the wildly popular ‘Pou’ mobile app, this cool, multi-level, interactive brain teaser requires tactful mouse control, smart analytical thinking skills, a desire for problem solving, good anticipation skills, and the ability to see the ‘bigger picture’ when planning your tactics for each level (There are 30 increasingly-difficult levels in total). Trial and error also comes into play – You may need multiple attempts to complete a level, and must learn from your mistakes as you progress.

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Methodically create a jelly-like tower of inter-connected sheep, and connect your structure with the golden sheep high up or at the bottom of the play area in each level of this quirky, physics-based brain teaser! Sheep Physics is a highly-challenging and stimulating interactive puzzle game where you must cleverly use sheep building blocks to create a fluid, tower-like structure that eventually makes contact with the ‘target’ gold sheep at the top of the play area. Your carefully placed sheep act as connectors between beams (horizontal beams, columns, strutting beams and ties) in the structure!

Skills required: This slightly eccentric and creative engineering-based skill game is really a straight-forward tower construction activity at heart, and that requires an amalgamation of smart analytical thinking and problem solving skills, an appreciation of the effects of gravity on a building structure. Good judgment and anticipation of when and where your tower might be liable to fail is very important. Unleash your creative side as you come up with fun structure that work - that get your sheep tower to reach the golden sheep high up or at the bottom of the play area.

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Play a teamwork-based, platform adventure game where your task is to guide a courageous astronaut duo through a series of increasingly-difficult, ledge-based levels. Interplanetary 3 is an interactive, escape-the-level brain teaser game for one or two players where you must safely maneuver a ‘little and large’ astronaut pair through 20 ledge and obstacle-filled environments. Completing the game is a tricky task for two friends or family members, and a highly-challenging mission for one player alone controlling both characters simultaneously!

Skills required: As this a fun mashup game combining problem-solving puzzle elements and action, you must call upon an array of physical and mental attributes to be an ‘Interplanetary’ success. Fast reactions, good hand-eye coordination, anticipation skills, and tactful keyboard control are all very important. Smart analytical thinking skills, problem-solving determination, creative engineering skills, good teamwork and stamina are all called upon here.

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Knock a red block to the ground using accurate pinball launching skills and great determination in this highly-challenging, interactive puzzle game! Knock Em' is an aiming and accuracy-based ball firing action game where your task in each level is to simply ‘knock’ the one red block so that it touches the bottom area of the confined level. The red block is often protected by blue blocks surrounding it, so you must figure out the best way to dislodge it with accurate and powerful pinball shots! However, you only have a limited number of balls available in each level, so your aim must be perfect!

Skills required: This hard and stimulating shooting ball / brain teaser game combines tactful, pinpoint mouse clicking skills with analytical thinking and creative engineering problem solving. Utilizing some knowledge of gravity, trajectory, and the kinetic force of objects crashing off of each other, you must carefully figure out a solution whereby your pinballs successfully force the red block to hit the ground at the bottom of each level. A willingness for trial and error, great patience and determination are essential – You won't complete each level on your first attempt, and need to regularly re-evaluate your aiming and firing strategy.

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Test and exercise your visual problem-solving skills with 25 blueprint-style mazes that may look simple but prove to be extremely tricky - where swinging doors that govern each maze make reaching your destination a tough task! Open Doors is a highly-challenging, multi-level, maze and strategy-based puzzle game where you must guide a movable square to an X-shaped Exit Portal. However, each maze is filled with ‘doors’ that swing open and closed depending on which way your square hero moves. This means that each of the 25 increasingly-difficult levels presents its own mini door-opening brain teaser – and it's your job to figure out the solution that ensures the square reaches the end point!

Skills required: This quirky, interactive, visual puzzle game requires high levels of focus and concentration - especially in later levels when the brain teasing action is more complex. Smart analytical thinking, creative engineering, determined problem solving, and general multi-tasking skills all come into play as you carefully plan your route through the alternating door openings. The ability to mentally zoom out and see the ‘bigger picture’ is also very helpful.

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Line Bounder is a challenging, old school, turn-based strategy game against the computer where your objective is to reach your designated ‘goal area’ by drawing lines across a neon-style grid. The catch is that your PC opponent has its own target to reach, and you must try to outfox him by strategically drawing lines and creating a unique pathway to your goal area. Much like the copy-book game ‘Dots’, you can use existing lines as checkpoints that allow you to continue your line-drawing turn, and make multiple moves in one go!

Skills required: This stimulating and addicting logic and strategy puzzle game requires a blend of smart analytical thinking, strategic planning, creative engineering, determined problem-solving skills, and the ability to make calculated moves that further your position while blocking your opponent's route. Making moves quickly and carelessly will almost certainly result in defeat. Take your time, and try to figure out the optimal move each time it's your turn to draw a line.

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Play a fun physics-based strategy game: Use good timing, keyboard control skills, and smart thinking to guide a slow-moving yet spirited snail through a series of construction-themed obstacle courses! Snail Bob is a playful, interactive, platform-based adventure game where you must alter each level environment in order create a path for your new snail buddy to safely make it through to the right side of the play area. Lower bridges, flip switches, remove obstacles, activate springboards and more as you strive to create a safe route for Bob through the chaotic construction sites!

Skills required: This fun, problem solving adventure puzzle game requires logic, tactful key control skills, sharp reflexes, and the ability to see the ‘bigger picture’ in order to secure Bob's safe passage. Sharp analytical thinking and smart strategy are called into play, especially in later levels when there is more of a brain teaser theme to the action. A willingness for some old-school trial and error is also important as you often have to perform tasks in a specific sequence in order to progress.

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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 cool, fun and addicting interactive puzzler: Exercise and sharpen your cognitive and problem-solving skills with this challenging and stimulating puzzle game where you must position 5 elevators between the 21st and 25th floors using math-based logic! Elevators Logic is a real head-scratcher of a game for older kids (8+ year olds), high school teens and adults - combining ordinary addition and subtraction logic with a passion for solving brain teasers. In this tough puzzle, your ultimate goal is to open the doors of five elevators and free the elevator occupants. 

Unfortunately for the passengers, this set of elevators operate on a bizarre system full of quirky rules! They must move two at a time, and can only go up 8 or down 13 floors at a time! Another big catch is that the elevator doors will only open when ALL FIVE elevators lie between the 21st and 25th floors inclusive! Phew! With all these rules, you just know this is going to be tricky, and immersive!

Reasons to play: This fun visual and logic-based puzzle should prove a rewarding activity for those who enjoy interactive mind games that are built on simple concepts with tricky challenges attached! It could also be used as a fun reinforcement activity for cognitive learning & development. Test and exercise your analytical thinking and cognitive skills, common sense reasoning, problem-solving determination and stamina as you strive to get all of the elevators to the required floors! Sharp math skills (requiring simultaneous adding and subtracting) also come into play as you try to visualize and solve in advance the best way to get all five elevators to where you need them to go.

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For elementary school age kids through high school teens and fun puzzle-loving adults! Get your analytical thinking skills in tune and fill a container with exactly 6 liters of water to help solve a tricky puzzle that will enable your alien friend Golo to escape a cave. Golo is trapped by a large metal gate and can only escape when you place a container filled with 6 liters of water onto a special scale! The catch in Golo in the Cave is that the only containers available to you are 7-liter and 5-liter pitchers, and each time you use the nearby well to add water, it fills the either container to the very top! However, you can pour water from one container to the other, and empty the containers whenever you like. Through a combined method of math-based logic and water transfer, you must figure out the best way to end up with exactly 6 liters of water in the 7-liter jug!

Skills Required: Fans of interactive, visual and logic-based math puzzles should enjoy this stimulating, one-level brain teaser game. Golo in the Cave requires sharp analytical thinking and problem-solving skills, common sense reasoning and strategy, determination and stamina to get the puzzle solved!

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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 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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This fun and highly-challenging interactive visual brain teaser and rotating tile puzzle (for kids, teens and adults) is playable on most mobile phone, tablet, notebook, laptop and desktop PC browsers. In Illuminate 1, test and exercise your analytical thinking skills to solve a fun yet challenging series of interactive puzzles where you must connect all the lamps on a circuit grid to the main power source (battery) in order to turn on the lights. 

Unjumble, re-arrange and connect the electrical current-carrying wire and circuit parts by clicking your mouse or tapping on the tiles to rotate the wires into favorable positions that create a connection within the circuit in order to ultimately light up / ‘illuminate’ all of the bulbs. Featuring 20 increasingly-complex levels, you must work against the clock and solve the maze-style puzzle before it's too late!

Skills required: In this fun and stimulating problem-solving game for children of elementary school age and Big Kids of all ages, you must use sharp logical and creative thinking skills, engineering skills, visual awareness, concentration, focus, common sense problem-solving, great determination and stamina to rotate tiles in order to get power to all of the lamps before the clock timer runs out. A sense or urgency and willingness for trial and error is also very important here as you imagine and try out multiple different possible routes for the power circuit to take.

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Play a head-scratching, interactive physics-based problem-solving game! Cyclop Phisics: Level Pack is a tricky, gravity-based puzzle where you must carefully and strategically maneuver red and green ‘cyclops’ balls so that they safely reach their respective Color Platforms in 25 increasingly-difficult levels. The one-eyed balls cannot move of their own accord, and only react to gravity when you click on them to alter their shape (A mouse click on any character changes it from square-shaped to circular, and vice versa).

This is a Flash-based, mouse control, logic brain teaser game for notebook, laptop and desktop PC / Mac (with certain browsers) that really tests your analytical thinking skills and quick reactions as you have to quickly adjust the shapes of the cyclops balls depending on the direction you need them to go. Your strategic planning ability is also exercised as you must deal with random obstacles and moving platforms in later levels. Sharp anticipation skills and tactful mouse clicking are also important here because knowing the future path of the falling balls gives you a big advantage.

If it looks like you aren't going to succeed and you want to Reset the level so you can start over, press the R Key on your computer keyboard or click on the circular arrow in the bottom left corner of the play area.

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

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Black Knight Insurrection is a challenging and stimulating, chess-based puzzle game for kids, teens and adults where you must leap around a chessboard-style grid in search of a Gold Star – always using the same (famously versatile) chess piece – the Knight! Although the game is undoubtedly built around chess principles, you really only need to know the basic moves of key chess pieces to enjoy the logic and strategy-based problem-solving here! Your task in each of the increasingly-difficult 40 levels is to collect the Gold Star, but you often have to activate switches, leap over objects, capture other chess pieces, and generally plan out your moves in advance like a true chess Grandmaster!

Black Knight Insurrection is a Flash-based, chess-themed puzzle game for notebook, laptop and desktop PC / Mac (with certain browsers). Key Control Feature: The Knight always moves in a specific ‘L-shape’. In one motion, it moves two squares horizontally and one square vertically, or two squares vertically and one square horizontally. Using your computer mouse or touchpad, Left Click on the square you want your Knight to move to. 

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

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Deftly guide a gold coin into a waiting piggy bank in this cute yet challenging ‘cut-the-rope-style’, timing-based skill game and brain teaser for mobile devices, notebook, and desktop PC! Piggy Bank Adventure is a fun and enjoyable, interactive physics-based game and tricky problem-solving puzzle for young kids through high school teens where you must cut ropes that tether a gold coin to the top of the play area, and utilize gravity, obstacles, and the contours of each level to ensure that the coin makes its way down and into the patient little pink piggy bank at the bottom of the game screen.

Piggy Bank Adventure is a HTML5-based game that should work on iOS and Android devices, as well as most web browsers for PC / Mac. As this is a timing-based activity, tactful mouse control / finger tapping skills are really important, especially when dealing with moving objects and platforms in later levels (There are increasingly difficult 24 levels in total). Other key skills required include patience, good strategic planning, sharp reactions and analytical thinking skills, and a willingness for trial and error.

Secret Tip: You do not have to guide the coin smoothly into the slot on the piggy's back in order to complete each level. Once the coin drops down and hits anywhere on top of the little piggy, it takes one bounce and lands perfectly into the slot. Gosh, if only my golf balls would do that!

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Play an online Sudoku puzzle game with three difficulty levels on your phone, tablet, notebook or desktop PC! Master Sudoku is a stimulating online version of the classic number-based brain training game. Playable on Android devices and web browsers, there are three difficulty levels –  Easy, Normal, or Difficult. Both novice and experienced Sudoku players can enjoy the head-scratching action as you play against the clock to complete each puzzle!

Played by brain teaser puzzle fanatics around the world, Sudoku is a logic-based, number-placement game. If you aren't familiar with the concept - your objective is to fill a 9x9 square grid with digits so that each vertical column, horizontal row, and 3x3 sub-grid contains the numbers 1-9 in any order.

This online, HTML5-based, survival mind game should work on Android devices as well as most web browsers for PC / Mac. Skills required include fast reactions (due to time pressure), sharp logical and analytical thinking skills, the ability to focus on the bigger picture, and to use the process of elimination to see which numbers work best in each position on the grid. Happy Sudoku puzzle playing!

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Have you ever witnessed the relief and satisfaction in your Mum or Dad's or other family member's face on successfully untangling a ball of string, or an old set of Christmas lights, or other tangled-up electrical cables at the back of your TV area? Now, you can experience the joys and challenges of such a tricky task here online in Untangle – a tough, visual brain-teaser puzzle where you must untangle multiple crisscrossed lines in an increasingly difficult levels! 

Playable on mobile phone, tablet, notebook, laptop and desktop PC, you must methodically drag circular ‘nodes’ around the play area in order to separate all of the wires from each other. When all of the lines and nodes are green, you progress to the next level! Untangle is a relaxing and at the same time challenging puzzle game. The goal is to arrange the points so that no line intersects.

This tricky, HTML5-based, interactive problem-solving puzzler should work on iOS and Android devices, as well as most web browsers for PC / Mac. Skills required include high levels of patience, good hand-eye coordination, sharp analytical thinking skills, and the discipline and determination to focus on the complex web of lines and visualize where best to begin the operation of untangling them. A willingness for trial and error are called into play as you try out different move combinations and strategies. Happy untangling!

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Sort Hoop is a straight-forward yet highly-challenging, online hoops stacking puzzle game (for elementary school age kids through high school teens) with increasingly-difficult levels - playable on iOS, Android, notebook, laptop and desktop PC.

The concept is simple; you must stack all of the colored hoops on top of each other. Solve the game by sorting colorful hoops. Think, strategize and predict every move. Enjoy the mental challenge as you stack the colorful hoops.

Select same color hoop and move to on each other to have same colored hoops in one pile.

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Strategically and tactfully remove blocks in order to deliver a delicious piece of candy to a hungry yellow block! Playable on Android mobile devices, laptop, notebook, and desktop PC, Catch The Candy is a multi-level, interactive physics-based, block removal puzzle game where you must carefully alter the game environment in order to guide a candy swirl into the mouth of a static yellow block hero. Both the candy and the block cannot move on their own, so you need to remove concrete blocks in order to create momentum and get the candy moving using a combination of the effect of gravity and the contours of the level.

This HTML5 physics & gravity-based brain teaser game should work on Android mobile devices as well as most web browsers for PC / Mac. Skills required include sharp analytical thinking and problem solving skills, tactful mouse clicking / finger tapping, good anticipation skills, and fast reactions to quickly figure out and create the best route for the candy to reach the hungry block. Trial and error also comes into play, especially in later levels when the obstacles are more complex, and actions must be executed in a specific sequence.

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Puzzle Color is a fun, physics and logic-based puzzle game where you must carefully remove all of the same color blocks from the play area. Destroy all the blocks using your brain. Move a block of the same color in a row with other same color blocks to destroy them and go to the next level. Each level is harder and harder.

This HTML5-based, physics-oriented brain teaser game should work on Android mobile devices as well as most web browsers for PC / Mac. Skills required include good sharp analytical thinking and problem solving skills, strategy, as well as the ability to figure out a logical solution which eliminates all same color blocks. A willingness for trial and error is also important in later levels.

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Use problem-solving skills and good strategy to help Jack escaping in this challenging, online blockade puzzle game! Playable on mobile, tablet, laptop, notebook, and desktop PC, Prison Escape game will keep you busy. Jack is an innocent person, who has been a victim of justice. In the restricted prison, it's tough to find any tools to escape! But smart Jack manages to plan out a perfect jail break in just 14 days. Draw a road map and use hand-made tools to drill through the wall for escape mission. Stay away from security guards!!! Use your mouse or tap on screen to draw the road map and tap to GO!

This online, HTML5, turn-based puzzle game should work on iOS and Android devices as well as most web browsers for PC & Mac

Test and exercise your problem-solving determination, logical and analytical thinking skills to figure out where the immediate chance of escape lies! Patience, stamina and a willingness for trial and error also come into play – especially as this is a one life / repeat-play game where one pig escape results in ‘Game over’, and you have to start back at the first level! Keep trying to go as far as you can with each new attempt! 

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Create colorful Christmas cookies exactly to order in this deceptively tricky puzzle game playable on iOS, Android, laptop, notebook and desktop PC! Christmas Cookies Jigsaw is a challenging, multi-level, logic-based brain teaser. To solve this puzzle you have to place 64 pieces in the correct jigsaw order.

This online, HTML5-based, matching puzzle game should work on iOS and Android devices as well as most web browsers for PC / Mac. Skills required include good problem-solving, logical / analytical thinking and strategy skills. Figuring out the ideal place for each piece of the cookie is vital.

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