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: 7.3/10 - 123148 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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Highly-challenging, general knowledge quiz game for young global fans of movies, songs, music groups, soccer football, and geography! Wordz is a tricky, word-based ‘fill in the blanks’ brainteaser puzzle where you must fill in a blank grid with letters in order to reveal the correct answer (name). Here, you are given a specific clue / category (‘Soccer Teams’, ‘Movies & Actors’, ‘Songs & Artists’, ‘World Capitals’), and must fill in the blanks by clicking on individual letters. Correct letters fill in blank spaces on the word grid – and you must solve the puzzle before you run out of guesses!

Reasons to play: Test your general knowledge of movies, songs, music groups, geography and sport (soccer)! While you might be a soccer football enthusiast and pass the soccer levels easily – you might need help from a more experienced quiz buff to help you find answers to other topics! This game could be played as a good fun teamwork activity for all the family at home where you could try to figure out the various clues together.

How to Play: A Flash-based, word quiz and letter guessing game for notebook, laptop and desktop PC / Mac (with certain browsers). At the beginning of each level, your category is displayed above the blank grid on the left hand side of the play area. General knowledge subjects include World Capitals, Soccer Teams, Movies & Actors, and Songs & Artists. All 26 letters of the alphabet are displayed on the right hand side of the play area. Your task is to fill the blank grid with the correct letters. However, you are only allowed 3 mistakes. If you enter a fourth incorrect letter, it's game over!

Using your computer mouse or touchpad, Left Click on the letter you want to add to the word grid. If the correct answer contains this letter – it is posted in the grid. However, if the letter is not contained in the answer, you score 1 ‘mistake’ in the box below the main grid. If you successfully fill all of the letters into the grid, you progress to the next level. See how many puzzles you can solve in a row!

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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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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Push cute animals toward an exit door by removing stone obstacles and altering the game environment with tactful and accurate mouse clicking! Zoo Escape is a cool, multi-level, physics and timing-based, problem-solving puzzle where you must help motionless zoo animals to ‘escape-the-level’ by pushing, propelling and guiding them toward the exit. Your principle action here is clicking to remove stone blockades – which causes objects to fall and subsequent chain reactions that (hopefully) push the animals to their Exit Door.

Skills required: This fun yet challenging, interactive point-and-click brain teaser game requires tactful mouse clicking, good coordination and anticipation skills, shrewd analytical thinking and problem-solving determination. Some later levels require great patience, stamina, and the key ability to learn from your mistakes (through good old trial and error).

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Strategically click to remove obstacles in order to guide a daring yellow smiley face into a cardboard box in 21 tricky levels! Adventure Smiley Box is an online physics and timing-based, point-and-click puzzle game for kids, teens and adults where you must carefully and swiftly remove orange blocks from the game screen in order to begin a chain reaction that channels a smiley face character into a waiting cardboard box. Our smiley hero cannot move on its own, and you must use the force of gravity and other items to nudge it toward the box in each level.

Skills required: This highly interactive, mouse-clicking game combines very fast reactions, coordination and tactful mouse-clicking with shrewd problem-solving skills. Your anticipation skills, logical and analytical thinking skills are really exercised here while good old trial and error is vitally important as you attempt to figure out the best way to get fun-loving Smiley into the box.

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Safely guide little penguins to an igloo sanctuary with careful and methodical alterations to the game environment in 30 increasingly-tricky platform levels! Penguineering is a cute, quirky and innovative, point-and-click puzzle game for kids where you must use quick reactions and accurate mouse clicking skills to create a safe path for vulnerable penguins affected by global warming to reach an igloo safe haven. However, each level is littered with obstacles and hindrances such as snapping baddies, steep ravines, icy spikes, and more!

Skills required: This fun, interactive, timing skills-based brain teaser requires smart strategic planning, savvy problem-solving skills, and the ability to learn from your mistakes (through good old trial and error). Cleverly figure out the best way to guide the penguins to safety using the various tools and items at your disposal. Sharp analytical thinking skills must be combined with engineering know-how, vigilant anticipation skills, good reflexes, and great determination to help these little penguins.

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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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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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Play a charming visual puzzle game: In Let Me Grow, you must remove and place wooden blocks in order to control the flow of water so that thirsty flowers can recover and bloom! This is a fun, engineering-based, problem-solving brain teaser for kids where you must clear pathways and create blockades on grid-based play areas in order to ensure that water reaches the daisies while avoiding contact with little village gnome characters. In Let Me Grow, you play the role of Chief Water Flow Engineer, and must use smart logic and strategy to control large bodies of water.

Reasons to play: For mobile phone, tablet, notebook, laptop or desktop PC, this entertaining brain teaser game is a good exercise of your problem-solving and analytical thinking skills. Utilize good concentration, planning and strategy skills as you work to ensure that the daisies receive irrigation while the little villager characters are simultaneously kept dry.

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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 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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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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