Thinkabara

🕹️ Online games and brain teasers

Google Classroom

The classics everyone loves, next to original puzzles. No download, no sign-up and no ads inside the game. Every game opens full screen, with soft background music you can mute with 🎵.

Puzzles and action

Ball SortMove balls between tubes until every tube holds a single color▶ Play · Ages Flying CubesTake a 3D cube apart: tap a cube and it flies off in the direction of its arrow, if the way is clear▶ Play · Ages Escaping ArrowsTap an arrow and it escapes off the board in its direction, but only if the way is clear. 300 levels▶ Play · Ages Double It to 2048Slide the board, join matching numbers and double them, all the way to 2048!▶ Play · Ages Block PartyDrag shapes onto the board and fill rows and columns to clear them▶ Play · Ages Traffic JamSlide cars forward and back to free the ice cream truck from the jam▶ Play · Ages Falling BlocksThe classic falling blocks game: turn, arrange and make rows disappear▶ Play · Ages Whack-a-MoleWhack the moles popping out of the holes, but not the bunny!▶ Play · Ages Sliding PuzzleThe classic 15 puzzle: slide the tiles until all the numbers are in order▶ Play · Ages MinesweeperUse the numbers to work out where the mines hide, without stepping on one▶ Play · Ages SnakeThe classic snake, champion edition: a 20-level journey, special powers and skins▶ Play · Ages

Classic games

Tic-Tac-ToeThree in a row: two players on one screen, or play an unbeatable computer▶ Play · Ages Four in a RowDrop discs and line up four: two players on one screen, or play the computer▶ Play · Ages BattleshipThe classic naval game against the computer: find and sink the whole fleet▶ Play · Ages Make 24Four numbers, four operations and one goal: make exactly 24▶ Play · Ages Memory MatchFlip two cards at a time and find every pair▶ Play · Ages 4+

Solitaire

SolitaireThe classic card game for one: arrange all the cards from ace to king▶ Play · Ages Spider SolitaireBuild runs from king down to ace, with one suit, two or four▶ Play · Ages FreeCellArrange all 52 cards with the help of four free cells▶ Play · Ages

Card games

Crazy EightsMatch the suit or the number, and an 8 changes everything▶ Play · Ages HeartsAvoid the hearts and the queen of spades in a strategy game for four▶ Play · Ages Poker AcademyLearn hand rankings, odds and spotting the winner with interactive puzzles▶ Play · Ages Five Card DrawClassic poker against the computer: choose, swap and build the strongest hand▶ Play · Ages Texas Hold'emA full poker table against up to five computer players, with blinds and side pots▶ Play · Ages Gin RummyBuild runs and sets, knock at the right time and beat the computer▶ Play · Ages

Brain teasers

Matchstick Puzzles200 levels · hints · stars · progress saved▶ Play · Ages Water Jugs100 levels · hints · stars · progress saved▶ Play · Ages River Crossing100 levels · hints · stars · progress saved▶ Play · Ages Which Wire to Cut?150 levels · hints · stars · progress saved▶ Play · Ages Lights Out220 levels · hints · stars · progress saved▶ Play · Ages Just One Move200 levels · hints · stars · progress saved▶ Play · Ages Brain IQ500 levels · hints · stars · progress saved▶ Play · Ages

Words and pictures

Find the DifferencesTwo almost identical pictures. Tap everything that changed. 18 levels▶ Play · Ages 4+Five-Letter WordA new word every day, endless practice by topic, and a word marathon▶ Play · Ages 7+

♟️ Board games and sudoku

Two people on one phone or computer, taking turns, or one player against the computer.

ChessTwo players on one screen, or against the computer at three levelsCheckersJump and capture diagonally, against the computer or a friendBackgammonDice, hits and a race home, against the computer or a friendSudokuKids 4×4 up to very hard, with notes and hints

Why are brain games good for kids?

Short puzzles train planning, spatial thinking and patience, and they feel like play, not homework. Many games offer a hint or an undo button; the options appear inside each game. Want the why behind the puzzles? Read the brain games guides.

Questions and answers

Are the games really free?

Yes. Every online game is free, with no download, no sign-up and no ads inside the game. They open right in your browser, on a phone or a computer.

Which games suit young children?

From age 5 or 6: memory, ball sort, find the differences and the kids sudoku. From age 8: traffic jam, 2048, the sliding puzzle and minesweeper. Every game shows its recommended age, and many have hints or an undo button.

Can two people play on the same screen?

Yes. Four in a Row, Tic-Tac-Toe, chess, checkers and backgammon can be played by two people on one phone or computer, or against the computer.

Is my progress saved?

Levels, stars and best scores are saved only in this browser, on this device. There are no accounts and nothing about the player is collected.