Six quick games.
One daily score.
Finish today's six, then keep playing word, number, logic, memory, reaction, pointer-skill, typing and Japanese learning games in unlimited practice. Useful skills and replayable puzzles live in one local-first platform.
Today's six
One game from each pillar. The mix changes daily; your six stay fixed all day.
Last 7 days
Your activity stays on this device. Green means 6/6 complete.
Explore by goal
Looking for one specific skill? Jump into focused practice instead of waiting for it to appear in Today's 6.
Learn by Playing
Japanese kana, vocabulary, kanji, mental math, geography and knowledge practice with local progress.
Learn →GEOGRAPHYMaps & Geography
Name countries, find them on the world map, or practice capitals and U.S. states.
Explore →KNOWLEDGETrivia & Connections
General knowledge, focused topics, classic Link Up and 4×4 word grouping.
Explore →WORDWord & Letter Games
Cryptogram, Word Grid, five-letter guessing, word ladders, anagrams and word search with daily and unlimited practice.
Explore →LOGICLogic & Grid Puzzles
Fillomino, Pipes, Number Path, Thermometers, Shikaku, Hashi, Light Up, Slitherlink, Skyscrapers, Hitori, Futoshiki, Binary Puzzle, Block Puzzle, Euchre, Cribbage, Gin Rummy, Backgammon, Spades, Hearts, Klondike Solitaire, Spider Solitaire, FreeCell, Mahjong Solitaire, Code Breaker, Reversi, Checkers, Four in a Row, Killer Sudoku, Minesweeper, Nonogram, patterns, logic grids and uniquely-solvable Sudoku.
Explore →Periodic Table · learn all 118 elements
Study the table, recall symbols and names, match atomic numbers, practice positions and build a local weak-item review without an account.
Morse Code · hear, copy and send CW
Learn 49 verified written characters through audio recognition, visual encoding, five-character copy groups and real press-duration keying with separate character and spacing speeds.
Lights Out · exact toggle logic
Practice 3×3, 4×4 and classic 5×5 guaranteed-solvable boards with exact minimum presses, a verified Hint and a separate Daily puzzle.
Unlimited practice
All ninety-seven catalog games are always available. Pin favorites with ☆; pinned and recently played games rise to the top. Practice never changes today's Daily Score.
Tents & Trees · unique camping logic
Pair each tree with one orthogonally adjacent tent, satisfy every edge count and keep tents from touching on 60 independently uniqueness-checked source boards.
Nurikabe · Islands & Walls
Grow numbered islands to exact sizes while one connected Sea winds around them without forming a 2×2 pool. Verified boards, drag painting, live rule monitoring and separate Daily play.
Shikaku · rectangle partition logic
Turn every number into exactly one rectangle of matching area, cover every cell, and use live remaining-candidate counts to trace forced deductions.
Thermometers · curved count logic
Fill straight and curved thermometers from bulb to tip while exact row and column counts constrain every fill level.
Fillomino · verified number-region logic
Grow clues into exact-size connected regions with live capacity, candidate and forced-growth feedback on independently unique local boards.
Maze · verified perfect labyrinths
Navigate unique-route mazes with shortest-path efficiency, backtrack and dead-end telemetry.
Dominosa · exact-cover domino pairs
Pair every cell once while using every unordered number pair exactly once, with X marks, a live pair ledger and independently verified unique solutions.
Music Reading · Note Reading
Read real staff positions across treble and bass clefs, then answer on a full virtual piano with local weak-note feedback.
Note Reading
Treble, bass and grand-staff drills with ledger lines, accidentals, key signatures, response-time tracking and browser-local weak-note focus.
Practice →GUIDENote Reading Trainer
Learn staff-position, ledger-line and key-signature reading workflows before drilling them at speed.
Learn →DAILY MUSICDaily Note Reading
One date-stable local reading session with a separate specialist history and streak.
Play Daily →Mental Math · Make 24
Combine four numbers into exactly 24 with exact rational arithmetic, solver-defined difficulty and state-aware verified hints.
Make 24
Easy, Standard and Challenge sources with exact fractions, Undo/Redo, deterministic seeds, local records and separate Daily play.
Practice →GUIDEMake 24 Puzzle Guide
Learn combine-order, factor planning, exact fractions and how solver-defined difficulty differs between source families.
Learn →DAILY MATHDaily Make 24
One date-stable exact-arithmetic puzzle with browser-local autosave, history and a specialist streak.
Play Daily →Tower of Hanoi planning
V0.133 adds generated three-peg and four-peg Hanoi states with exact BFS par, live detour telemetry, Verified Hint and a separate specialist Daily.
Water Jug measuring
V0.134 adds exact state-space measuring puzzles with live shortest-distance telemetry, verified hints and a separate Daily.
Water Jug Puzzle
Fill, empty and pour unmarked jugs while comparing every route with the true BFS minimum.
Daily Water Jug
One date-stable verified measuring challenge with autosave, Clean/Assisted records and local streak.
Mental Rotation · exact 3D spatial reasoning
Turn connected voxel sculptures in your head, separate true cube rotations from mirror images and near-miss shape changes, and review rotation load, response time and error type.
Object Tracking · dynamic divided attention
Memorize 2–4 marked targets, keep their identities through verified collision-safe motion, then recover the same objects. Adjust playback speed or use local Adaptive practice without changing the underlying path geometry.
Task Switching · rule-shift flexibility
Apply an explicit cue, switch between response rules, and compare repeat versus switch timing without an opaque population score.
Go / No-Go · response inhibition
Build a frequent Go response, then withhold it on rare No-Go trials. Review commissions, omissions, reaction-time consistency and Clean Adaptive pace.
Digit Span · ordered working-memory practice
Watch digits one at a time, reconstruct them Forward or Backward, and review exact accuracy, maximum span and recall timing without a fabricated percentile.
Flanker · center-target selective attention
Answer the center target while surrounding symbols agree, conflict or stay neutral. Compare condition accuracy, median correct reaction time and the observed conflict cost without a fabricated clinical score.
Visual Search · target detection among distractors
Find the exact target or report Absent as set size and distractor similarity increase. Compare present/absent accuracy and observed search time without a fabricated clinical score.
Change Detection · visual working memory
Remember a brief object array across a delay, then decide whether the probe is exactly the same or one feature changed. Compare Same/Change accuracy and set-size timing without a fabricated clinical score.
Japanese Vocabulary Mastery
Master the existing 300-word beginner bank theme by theme with typed production instead of recognition alone.
Japanese Kanji Mastery
Turn the existing 2,211-kanji bank into a visible 113-deck completion path with first-attempt meaning, reading and reverse mastery.
2048 Strategy Coach
Compare every legal swipe with a transparent local evaluator and practice space, corner, merge, mobility and ordered-chain decisions.
Chess Tactics Academy
Train 96 legal synthetic positions across mate, fork, winning-material and forcing-check patterns without replacing the complete Chess game.
FreeCell Strategy Lab
Play the classic Microsoft-compatible deal set, then compare distinct legal moves with an explainable workspace planner and provenance-replayed decision drills.