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: 7.5/10 - 105629 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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Play a challenging visual puzzle and color coordination game: Collect all the colors of the ‘prism’ by combining same-colored blocks together in this sliding tile-based puzzle game inspired by the phenomenally-popular game 2048! Prism is an addicting, online brain teaser game where you must merge matching tiles together to unlock new colors – with the ultimate goal of finding the elusive, final Purple tile. Playable on most mobile phone, tablet, notebook, laptop and desktop browsers, you must methodically slide the tiles around the 4X4 grid, ‘doubling-up’ the colors and scoring points along the way.

Reasons to play this tricky problem-solving game: Fans of 2048 (the sliding-tile number game that has been played by millions of gamers since its launch in 2014) should enjoy this quirky twist on the familiar gameplay. Test and exercise your analytical thinking skills, focus, concentration, and problem busting determination.

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Divide is an easy-to-play yet highly-stimulating, geometry-themed puzzle game where you must ‘divide’ a large wooden shape in order to form a target number of smaller pieces. The catch is that you have only allowed a set number of slicing actions to create a set number of independent wooden pieces, so you must be extremely precise with your shape-dividing skills. This head-scratching, problem-solving puzzle requires imagination, good analytical thinking skills and strategy. Accurate mouse control skills are also very important.

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Fly Tangle 2 is a highly-challenging, surprisingly-addicting, skill-based, visual problem solving puzzle game for kids, teens and adults where you must untangle a group of large flies which have criss-crossed their lines (wires) across the game screen. Think of the tricky task of untangling the old-style wires of Christmas tree lights and other electrical appliances, and you should hopefully get a better idea of the complex and inconvenient yet fun problem at hand.

As Chief Untangler, you must carefully drag the flies within the play area, methodically freeing up their criss-crossed lines, in order to progress. This unusual and highly interactive brain teaser requires a high concentration level, sharp visual skills, and great patience and tenacity. So keep trying – and those tangled wires should eventually be freed up! Oh, and one more thing: There are a massive 48 levels to get your mind into! Happy untangling!

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Strikey's Revenge is a challenging, "street golf"-themed, physics-based puzzle game where you must shoot a golf ball into a waste basket in a series of 18 progressively-difficult, obstacle-filled levels (which play like a wacky game of mini golf combined with the intricate science of power, angle, and trajectory!). You play the role of Strikey, a fiery golfing prodigy, and must use his incredible skills and aiming devices to figure out the best way to engineer a solution that deflects the ball into the urban waste basket (bin) in each tricky level.

Skills required in this multilevel golf, aiming and accuracy game: Creative engineering and analytical thinking skills are very important in this environment – There are multiple ways to get the ball into the basket depending on the angle and power used in your shots. Trial and error is also part of a smart strategy as you test out how the ball reacts against the various obstacles and unusual objects in each level. Good observation skills, a steady hand, a cool head under pressure, and expert mouse control all play a part in your chances of success.

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Play an addicting and challenging brain-teaser, disc swapping and matching-based puzzle game online! Bunch is a stimulating, interactive, multilevel, visual puzzle game for kids and teens that combines color coordination skills, observation skills and problem solving determination. With two distinct game modes, you must swap colored discs around a confined game grid, creating as many matches of three or more discs as you can.

Reasons to play this challenging brain-teaser game: Fans of classic match-3 games such as Candy Crush should enjoy the simple action here. Test and exercise your reactions and reflexes against the clock in classic mode, or give your analytical thinking skills a more thorough examination in Puzzle mode.

Read the introductory instructions to the mode you play. Depending on the mode, you might have to be more aggressive and quick in your swapping and matching. You need to focus hard on the environment, searching for possible swaps and matches. This game requires great stamina and determination to progress high into the levels.

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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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A cool stacking blocks game online: Towertris is an excellent 3D re-invention of Tetris – the classic block building puzzler. Just as in original Tetris, this fun game features continuously descending building blocks that must be carefully slotted into place to create full horizontal rows to be eliminated from the play area. In this more interactive version, you actually build a cool 3D tower that can be rotated 360 degrees, making the challenge of building and creating solid rows even more stimulating and enjoyable!

Reasons to play Towertris: Fans of retro arcade-style games and vintage 1980's puzzles should enjoy the quirky new take on a true gaming classic! Test and exercise your cognitive thinking skills and fast reactions under pressure as you constantly rotate your tower and attempt to seamlessly slot blocks into your structure. Stimulate your creative engineering skills as you continuously build your tower while expertly handling the continuous tide of falling blocks.

Best strategy to win: With differently-shaped blocks falling at regular intervals, you must be in a constant state of readiness, and exhibit smart reflexes as you try to spin your tower and slot in the blocks where you think they should go. Keeping a cool head at all times under pressure is very important.

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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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Footprints is a very challenging yet relaxing, multi-level, point-and-click puzzle game for older kids and adults where you must navigate (step-by-step) through a series of stepping stone maze-like grids. The catch here is that you can only use each individual tile of the grid once as you find a successful route and pathway to the Green Exit Tile.

This very interesting, problem-solving brain teaser activity for kids, teens and adults requires good analytical thinking skills, smart strategy, and patience to carefully seek and find a solution to each increasingly-complex puzzle. Deep thinkers and board game enthusiasts should enjoy the "route plotting" game play combined with the simple mouse-only controls. Learning from your mistakes (trial and error) play a big part toward solving any tricky puzzle game, and Footprints is no different.

The ambient background soundtrack also adds to the distinctive atmosphere and feel of the game. Are you ready to leave your ‘footprint’ on this challenge?

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Meet Biff and Baff – two brightly-colored rolling balls that have to use their own eccentric brand of teamwork in order to navigate through a series of tricky platform-based mazes. Biff and Baff Rolling is a fun and refreshingly-simple arcade puzzle game where you have to guide these two cute little spheres to a Finish Area by utilizing their unique individual attributes, and create a pathway through each challenging (and very narrow) maze. Biff (the blue ball) can collect keys and unlock doors, while Baff (the red ball) can open these doors and collect point-scoring stars. By combining the skills of both Biff and Baff, you can switch between the two, and safely maneuver them through each increasingly difficult puzzle. Be very careful however! Each level is littered with extremely narrow ledges, and plenty of obstacles and traps!

This brilliantly-conceived rolling ball game requires some acute logical thinking, and will test your multitasking skills as you have switch your control of Biff and Baff in order to complete various different tasks in each level. Creative vision and strategic planning is very important as you embark on a journey that champions the virtues of teamwork and cooperation. Both balls are very sensitive to movement, so keeping a steady hand is also a vital ingredient. One tiny slip; and either of the little guys could fall off the edge, and plummet into the abyss below! Ok Maze Master, it’s time to show us the very meaning of teamwork! Happy cooperation!

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An interactive sliding puzzle game that requires focus, quick thinking, creative design skills, strategy, and lots of determination under pressure. Create a viable electricity pipe channel (connection) between the two electric glowing sources, against the clock! Connection is a challenging online visual puzzle game where you must methodically re-arrange (slide) jumbled tiles on a large grid in order to create a continuous pipeline where electricity flows freely from the start to the end point. Your initial problem is that the various corner pieces and straight pipe tiles are positioned randomly around the huge game grid, making pipe construction tricky and time-consuming! And then, to keep the clock running, you must continue to generate electricity via creating further successful connections!

This addicting maze-like, brain-teaser game provides a good fun exercise and test of your concentration levels, observation skills, quick reactions, and love of problem solving as you attempt to pinpoint the various tiles (square pieces) needed to complete your pipeline, and then slide them into position as quickly as you can. Swapping tiles randomly around at speed is of no use if you don’t have a coherent, logical plan to join up the electricity line. The overall ability to step back momentarily, to review and see the bigger picture, and then react urgently is essential here as it is in many real life situations everyday. Now, are you ready to take on this electrifying task?

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Fans of challenging, interactive, physics-based brain-teasers should enjoy this fun exercise played against the clock: Figure Shaper is a demanding, multi-level, physics puzzle game where you must carefully and cleverly change the shape of green block characters in order to guide one of them to the Finish Gate in each level (through falling, rolling, tumbling, or being dragged).

Your analytical thinking and creative engineering problem-solving skills really need to be sharp here. Good focus and concentration levels combined with fast mouse control and reactions are also key abilities required as you attempt to quickly alter state of the characters and game environment to your advantage. Happy shape-shifting!

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Omit Orange is a fun, physics and logic-based puzzle game where you must carefully remove all of the orange blocks from the play area in 25 increasingly-difficult levels. Playable on Android mobile devices, laptops, and desktop PC, you must strategically remove all orange items while simultaneously protecting any green blocks from falling off of the game screen. Sometimes, orange blocks can simply be clicked or tapped into oblivion – but often you must remove other excess obstacles in sequence (and with good timing) in order to successfully eliminate all orange blocks from the play area!

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 orange blocks and saves green blocks from the same fate. A willingness for trial and error is also important in later levels when you are faced with more stubborn orange blocks – such as the sunglasses-wearing blocks who cannot be eliminated by clicking or tapping alone! 

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How good are your ball control skills? Use deft touches, reaction skills and expert mouse control to guide a bouncing, ricocheting ball into a bucket in dozens of copybook-style, obstacle-filled levels. The Circular Blot is a fun and challenging, interactive, multi-level, mouse-based skill game and physics-based strategy puzzler. Using a tethered ‘blot’ attached to your mouse cursor, you must carefully and creatively deflect a falling paper ball into an open bucket.

Reasons to play this tricky online arcade game: This is a hard problem-solving brain teaser puzzle where you must figure out the best way to use gravity to your advantage. Showcase your skillful hand-eye coordination, fast reactions and reflexes in a high-intensity, motor skills testing environment. While the concept and copybook-style graphics may be simple, the execution and difficulty level of each level is very high!

Strategy to win: Each level has numerous solutions, and you must try to use the most efficient solution to get the ball into the bucket. Trial and error (learning from your mistakes) and great determination are also very important – Surely only a ball control wizard could complete each level on the first attempt!

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Play a challenging, match 3 jewel-swapping game against the clock! Jewel Jungle is an interactive, multi-level matching puzzle where you must complete specific matching tasks by swapping jewels around in a grid so that they line up in horizontal or vertical groups of three or more. Playable on mobile phone, tablet, notebook, laptop and desktop PC, you must hit specific points targets or create a set number of matching groups before the timer runs out.

Skills required: As in many match 3 grid puzzle games inspired by the Candy Crush phenomenon, you must utilize fast reactions, hand-eye coordination, problem solving skills, shrewd observation, and dogged determination in order to succeed. Due to the different level types and fluctuating time limits, you need to adapt your strategy each time you take on the grid.

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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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Neo Life is an absorbing and challenging physics-based puzzle game for children and grown-ups combining brain power and strategy. Here you have to dramatically alter each game level in order to knock any blue spheres completely out of the play zone. Using your computer mouse as a cutting tool, you have to tactfully sever ropes that hold orange spheres in place so that it causes a gravity-controlled chain reaction that, in the end, forces the main blue sphere down and out of the game.

Set in a futuristic, Tron-like game environment, this tricky problem solving activity offers no room for error, and provides gamers of all ages with a stern test of their mental and physical game-playing attributes. Logical thinking, good concentration, creative engineering skills and steadfast determination are paramount on the mental side of this puzzler, while tactful mouse clicking and smart reactions are required on the physical side. Trial and error is an essential part of learning and success in real life, and you must learn from your errors to progress far here. So then, are you ready to immerse your problem-solving know-how into this real visual brain-teaser?

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Sharp logical thinking skills required! Jelly Alien is a "doozy" of a physics-based puzzle game where you have to combine good strategic planning & prediction skills, creative engineering skills and swift mouse movements in order to unite several squidgy, little purple gelatinous aliens into one large body! These friendly extra-terrestrial invaders have become separated by large distances, tricky obstacles, and an unforgiving landscape - and you must don your thinking cap to figure out a way to somehow bring them together in each challenging level. You play the role of the Game Environment Changer, and must use a clever combination of cutting actions, gravity, and the game terrain to create pathways, bridges, and routes for the blobby aliens to join together by cutting wooden objects and ropes. However, it’s not all plain sailing as you have to avoid the dastardly ‘Evil Aliens’ who try to scupper your plans at every turn!

This addicting and surprisingly-tricky online brain teaser activity required plenty of patience and trial and error, and tests your observation skills and ability to figure out a logical solution to each problem. You cannot directly control the movement of the purple aliens, so you have to resort to outside influences – mainly your own cutting tool – in order to move and unite the little guys. In this fun problem solving exercise, your wood and rope-cutting swipes must be tactful as well as accurate! The difficulty of some of the later levels could definitely pose a stern test for some seasoned brain game veterans, while younger gamers should enjoy the immersive interactive action. Happy blob work!

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Play a fun, dynamic, physics-based puzzle game, and interact with the game screen in order to stop rolling invader ‘Noobies’ from reaching the left side of the play area! Noobies Invasion is a high-intensity, multi-level strategy and problem-solving game for elementary school age kids through high school students where you must quickly, carefully and tactfully interact with the game screen using your mouse in order to immobilize invading green balls from reaching their goal of breaching the left-hand side of the game screen. Your tasks include removing blocks at key intervals, forcing the enemy to take alternate routes, unleashing your own defensive Noobies, and more! Can you put a stop to the mass invasion in all 24 levels?

Skills required: This enjoyable and challenging, fast-paced interactive brain teaser game requires a combination of quick reactions, smart strategy, tactful mouse clicking, great discipline, focus, concentration and anticipation skills if you want to figure out the best way to stop the relentless Noobie march in each level. Analytical thinking and creative engineering skills come into play as you try to manipulate the block-based game environment to your advantage. Trial and error is a vital component as you must learn from your mistakes on your quest to keep the rolling terrors at bay!

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Yummy Nuts is a fun, physics-based, ‘cut the rope’ skill game that requires puzzle-solving know-how, good strategy, good timing, and great patience and determination if you fail. In a nutshell, you have to slice through supporting ropes (with your mouse action) that hold a cute little squirrel in place, and then use the subsequent momentum of the swinging squirrel on the ropes along with gravity in order to re-unite it with its hungry baby squirrel! You really have to carefully and methodically time each rope-cutting maneuver (literately to perfection) so that the squirrel gets where it needs to go (especially if you want to collect all of the delicious "yummy nuts" along the way, which is a happy bonus). Aided by helium-filled rising bubbles, air-blowing piggies, and other raucous characters, you are faced with 48 increasingly difficult levels with progressively complex puzzles and obstacles in your way.

This highly-stimulating, problem-solving game should prove to be a good test and top interactive physics-based activity for gamers who enjoy gravity-based brain teasers that also combine some with physical skill. Tactful mouse movements are key to your success as you try to pinpoint the exact moment to cut a rope. Try to gather as many nuts as possible on your rope riding journey to your little baby (Expert players should aim to collect all three nuts in each level). Happy rope cutting!

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