Train your brain
Brain games each target one skill: memory, speed, math or logic. Rounds are short and your record is a number, which makes it easy to race yesterday's you.
Bulls and Cows, 1 to 50 timed to the hundredth, mental math with times tables, a reaction test in milliseconds, color sequence memory, spot the difference, and logic puzzles like Sudoku, Nonogram, 2048 and Tower of Hanoi.
All free, with no download or sign up.
Number BaseballCollect strike and ball results and eliminate digits until you pin down the secret 3 digit number. There is also a 4 digit mode, a duel against the computer and a daily number.
Color MemoryMemorize the order the colors light up and tap it back, with one more color added each round. Every color has its own note so you can hum the sequence, and there are 6 color and Backwards modes.
1to50Find and tap the numbers in order on a shuffled 5×5 grid, keeping your eyes one number ahead of your finger. Times are measured to 0.01 seconds, with 1to25, 1to100 and 50to1 modes too.
Spot the DifferenceCompare two nearly identical pictures and tap the 5 to 7 spots where something is missing, recolored or flipped. Objects are placed fresh each round across eight scenes, and Time attack starts you with 90 seconds.
Reaction Time TestTap the instant red turns green and get your reaction time in milliseconds, averaged over five tries. The wait is random every time, and there are also aim, sound and number memory tests.
Quick MathWork out each sum in your head and type the answer, which is checked the moment you enter enough digits. Modes include a 60 second drill, Times Tables, True or False and a survival run.
SudokuRule out digits by row, column and box until a cell has only one candidate left. The four levels, Easy to Expert, are graded by the techniques each puzzle actually needs.
Memory MatchRemember where each card showed its picture so you can open the pair in one go. Boards range from 6 to 18 pairs, and the computer opponent remembers more cards on harder levels.
NonogramRead the number clues on each line and work out which cells must be filled and which must stay empty. There are 32 pictures from 5×5 to 20×20 plus random grids, all solvable by logic alone.
2048Slide the board so equal tiles collide and double, planning moves that keep your biggest tile pinned in a corner. Boards run from 3×3 to 6×6, and undo lets you take a move back.
Tower of HanoiWith one rule, never a bigger disk on a smaller one, you plan which peg to clear first by thinking back from the biggest disk. Choose 3 to 10 disks and match the minimum move count for three stars.
Lights Off PuzzleEach tap flips a bulb and its four neighbors, so you work out which set of bulbs to press to switch everything off. There are 120 levels from 3×3 to 7×7, with the minimum number of taps shown for each.
Binary PuzzleUse three rules, half suns and half moons in every line, no three in a row and no identical lines, to fix each empty cell. Grids run from 6×6 to 12×12, and a hint explains in one sentence why a cell is forced.
Killer SudokuUse the cage sums, and the fact that every row, column and box adds up to 45, to narrow down which digits fit where. Normal and Hard start from an empty grid, and there is a daily puzzle shared by everyone.
Tap the KeysAlways tap the lowest black key across four lanes, so your eyes and fingers have to keep pace together. There are Classic, Arcade and Zen modes, and every tap plays the next note of an old tune such as Für Elise.
Bulls and Cows, 1 to 50, mental math, reaction time test, color sequence memory, spot the difference, Sudoku, 2048 and more.
There is no rule. Rounds are short, so a few minutes on a break is a fun way to practice memory, math and quick decisions.
Yes. Best records stay in your browser, and some games make a result card to share.
Yes. Many have one line rules, like 1 to 50, color sequence and spot the difference, and mental math includes times table practice.
