Unblocked Puzzle Games
This is the biggest shelf on GN Math. You will find grid logic, number and math puzzles, sliding tiles, pipe and loop puzzles, and color sorting. Every one runs in the browser tab, so a free period is enough for a few rounds.
57 games on this page ↓
All 57 puzzle games
top pick!📱2048
Push every tile at once, pair up equal numbers, and keep doubling until a 2048 tile shows up on the board.
top pick!📱Hextris
Turn a hexagon so incoming colored blocks pile up in matching groups, and clear them before any stack grows too tall.
top pick!📱Sudoku Flow
Classic 9x9 number logic with five levels, a custom clue slider, several modes, notes and hints that teach as they help.
Mahjong Solitaire
Match pairs of free tiles to dismantle a tall stack of 144 mahjong pieces, choosing from six board shapes.
📱Word Search
Spot twelve hidden words running in any direction, try seven themed lists, or turn your own word list into a new grid.
📱Black Box Lasers
Fire beams into a sealed grid and use where they exit to deduce the spots of the hidden balls.
Block Code Duck Pond
Code a battling rubber duck with drag-and-drop blocks, then rewrite the same plan in JavaScript.
Block Code Maze
Stack drag-and-drop code blocks to steer an astronaut through ten mazes, from simple steps to self-solving loops.
Block Code Music
Write a melody with code blocks, learn functions by reusing phrases, and layer voices into a round.
Block Code Turtle Art
Steer a drawing turtle with code blocks and recreate squares, stars and a moon using loops and angles.
📱Bridges Island Puzzle
Connect numbered islands using one or two bridges at a time until all counts match and the map forms a single network.
📱Bulls and Cows
Guess a secret code of four shapes and narrow it down with black and white peg clues before your tries run out.
Complements
A physics gem puzzle where same-color clusters bond together and break apart when they touch their opposite color.
📱Crater Space
Tap squares on a cratered moon grid to splat three hidden starships, with only misses counting against you.
CSS Diner
Type CSS selectors to pick exactly the right plates, apples and pickles off a table across 32 lessons.
📱CSS Grid Carrot Patch
Learn CSS grid by typing rules that water the carrots and poison the weeds in a small 5x5 garden plot.
📱Dominosa Domino Logic
Work out where a full domino set once lay by reading a grid of numbers and placing each pair exactly once.
Elevator Saga
Program a building's elevators in JavaScript and keep refining your code until every rider gets where they are going on time.
📱Five-Square Tiling Puzzle
Fit twelve five-square shapes, each named for a letter, into a rectangle so that every cell is covered once.
📱Flexbox Lily Pond
Write CSS flexbox rules that move colored frogs onto the lily pads that match them, one lesson per level.
📱Flood Fill Puzzle
Repaint a growing corner patch one color at a time until the whole grid turns a single shade.
📱Galaxies Symmetry Puzzle
Cut a dotted grid into shapes that each stay the same when spun halfway around their own dot.
📱Greater-Than Grid
Write digits into a grid with no repeats per line, letting the little greater-than signs guide each choice.
📱Hyperspace Garbage Collection
Pilot a tidy-up robot through four chambers, pushing blue and red space junk onto switches to unlock each exit.
📱Inertia Gem Slide
Your ball keeps rolling until something stops it. Gather all the gems and never slide into a mine.
Learn Git Branching
Solve 36 puzzles by typing git commands until your commit graph looks exactly like the goal.
📱Light Up Lamp Puzzle
A grid logic puzzle where you place bulbs to light every white cell without letting any two bulbs shine on each other.
📱Loopy Loop Puzzle
Join grid dots into a single unbroken ring that matches every number clue, on square grids or strange tilings.
📱Magnet Dominoes
Sort a grid of grey dominoes into magnets and blanks so every row and column hits its plus and minus counts.
📱Math Cage Grid
Fill a number grid so each caged group hits its sum, product, difference or quotient, with no repeats in a row or column.
📱Net Pipe Puzzle
Rotate scrambled pipe tiles until the whole grid forms one connected network without any loops.
📱Netslide Pipe Puzzle
Slide full lines of a jumbled pipe grid back into order so every tile joins one network with no loops.
📱Pearl Loop Puzzle
Trace a single ring through the grid, bending at every black pearl and running straight across every white one.
📱Peg Solitaire
A solo board puzzle where each hop removes a peg, and the goal is to leave just one standing.
📱Range Shading Puzzle
Blacken squares so every clue sees exactly the right number of white cells, with the white area kept in one piece.
📱Robot Coder
Plan a robot's full route as a short program, then run it and hope every step lands where you counted.
📱Same Game Blocks
Pop groups of matching colored squares, watch the others tumble down and try to leave the box empty.
📱Signpost Arrow Chain
Link every square into a single numbered path, where each arrow points the way to the square that comes next.
📱Skyscraper Sightlines
Fill a grid with towers of different heights so the clues around the edge see exactly the right number of roofs.
📱Slant Diagonals
Put one diagonal in each square, satisfy the numbered corners, and keep every chain of lines open to the edge.
SQL Detective Mystery
Crack a murder case by writing SQL queries that dig through police reports, interviews and records until one name remains.
📱Tangram
Turn, flip and tap seven geometric pieces into place until a silhouette is filled with nothing left over.
📱Tents and Trees Puzzle
Place a tent next to each tree on a grid, keep tents from touching, and hit the number given for every row and column.
📱Train Track Logic
Build one continuous railway from A to B with straight and curved rails, matching the track total for every row and column.
📱Undead Mirror Maze
Fill a haunted grid with ghosts, vampires and zombies so each edge number matches what you would see through the mirrors.
📱Unruly Black and White
Shade each square black or white so every line is half and half and no three matching squares sit side by side.
📱Untangle Lines
Pull the points of a tangled drawing around the board until every crossing is gone and the lines lie flat.
📱Black Hole Square
A tiny minimalist puzzler. Push tiles into black holes and leave the board clean before your taps run out.
Block Drop
Guide falling four-square shapes into full rows before the pile reaches the top of a narrow court.
📱Color Pour Sort
A tube-pouring puzzle where layers come in different thicknesses and each level adds more colors to sort.
📱Color Tile Match
Swap tiles to clear lines of matching colors, and keep scoring so the shrinking timer bar keeps refilling.
📱Fifteen Slide
Slide numbered cubes into the single gap until the 4x4 frame reads 1 to 15 in order.
📱Light Switch Grid
Flip switches on a 5x5 board of amber lights until the whole grid goes dark, using as few presses as you can.
📱Logic Mines
Clear a hidden minefield where a solver punishes lazy guesses and rewards careful reading of every number.
📱Memory Pairs
Turn over cards two at a time and match every pair of food pictures in as few moves and seconds as you can.
📱Number Path
Draw a single line that fills the whole grid and hits each numbered dot in sequence, from 1 to the last.
📱Tower of Hanoi
Rebuild a tower of rings on the far peg, moving one at a time and never stacking a larger ring on a smaller one.
Where to start
New to this shelf? These are our first recommendations.
2048
The easiest way in. Slide the board, merge equal numbers and plan two moves ahead so the grid never jams.
Hextris
You turn the hexagon, not the blocks. It sounds simple until all six sides start filling at once.
Math Cage Grid
Pure number logic. Every outlined cage has a target and a sign, and each row and column takes each digit once.
Sudoku Flow
Classic sudoku with pencil notes and hints, so it works for a first-timer and for someone chasing the hardest level.
What counts as a puzzle here
A puzzle game gives you a fixed set of rules and asks you to find the arrangement that satisfies all of them. There is no timer pushing you in most of these, so you can think a move through before you commit. Many of the grid puzzles come with several sizes or difficulty settings and a fresh layout each time.
Some are about numbers, like filling cages that must add up to a target or merging tiles to reach a goal value. Others are purely visual, such as drawing a single loop through a board or connecting islands with bridges.
How to get better at logic puzzles
Start with the smallest board each game offers. Small grids teach the basic deductions quickly, and those same deductions repeat on the larger boards. When you feel stuck, look for the most constrained spot on the board, the cell or edge with the fewest legal options, and work outward from there.
Guessing is rarely needed. If a puzzle allows marks or notes, use them, because writing down what a cell cannot be is often what reveals what it must be.
Good picks for a short break
Number merging and color sorting games fit a five-minute gap well, because each round is short and you can stop at any time. Bigger logic grids suit a longer session when you want something to chew on.
Puzzle Games FAQ
Are these puzzle games free to play at school?
Yes. Each puzzle is a small HTML5 game hosted on this site, with nothing to install and no account. If your school network allows the site, the puzzles will load in a normal browser tab, including on most Chromebooks.
Which puzzles are best for practicing math?
Start with the number puzzles here, such as the cage-sum grids and number merging. For straight mental math, the casual section also has a factor game and a quick arithmetic sprint.