Mind Games
Short, free drills for working memory, attention, logic and mental arithmetic, plus a few classic puzzles. They run entirely in your browser and your best scores are saved only on this device.
What to expect: practising a drill reliably makes you better at that drill. Research reviews have found little convincing evidence that such practice transfers to general intelligence or everyday thinking (Simons et al., 2016, Psychological Science in the Public Interest). Play them because they are fun or useful warm-ups — not as treatment.
Your results on this device
Only drills that record a best score are listed. Nothing leaves your browser.
Puzzle games
3D Rubik's Cube & CFOP Solver
Interactive 3D virtual Rubik's cube with face rotation keyboard shortcuts, scramble generator, and CFOP step-by-step layer reduction.
Sudoku, Nonograms & Picross
Play Sudoku with error checks and pencil marks, or solve Japanese Nonogram pixel puzzles with line deduction intersection logic.
Wordle, Word Ladders & Anagrams
Play unlimited Wordle with interactive color feedback, morph words in shortest paths via Word Ladders, or scramble anagrams.
Working Memory & Pattern Recognition
Memory Matrix
Practise visual-spatial recall: memorise flashing tiles as the grid grows with your level. Every third correct round in a row earns a bonus.
Sequence Recall
Progressive working memory sequence span test. Observe auditory and visual pattern flashes and reproduce them accurately in forward chronological order.
Pattern Predictor Lab
Abstract inductive reasoning puzzle suite. Deduce shape rotations, arithmetic progressions, color cycles, and logical shifts to predict missing elements.
Attention & logic
Attention Tracker (MOT)
Multiple Object Tracking (MOT) — a task widely used in attention research. Keep your eye on several targets as they move among identical distractors.
Logic & Syllogism Lab
Formal reasoning benchmarks covering Aristotelian syllogisms, Boolean implication laws, fallacy detection, and transitive relational deductions with complete proofs.
Focus timer, breathing & creativity
Focus Forge & Breath Anchor
Autonomic nervous system regulation with animated 4-7-8 breathing circle pacer, paired with distraction-logged Pomodoro++ deep work sprint intervals.
Creative Spark
90-second divergent thinking sprint. Break functional fixedness by generating novel, practical applications for common physical objects and everyday constraints.
Mental arithmetic
About these drills
Side project the drills were adapted fromThese drills began in AIDE, a personal side project exploring study and focus tools. They are deliberately simple: no accounts, no streak pressure, no notifications. Use them as short warm-ups or breaks; for learning engineering material, retrieval practice on the roadmaps is a far better use of time.
100% client-side execution. No behavioral tracking, no third-party telemetry, and no advertisements.
The hub and most drills work with a keyboard. Some fast visual drills (e.g. object tracking) are inherently hard to make screen-reader accessible — tell me if one blocks you.
No XP, streaks or badges — just your own best scores, which you can clear at any time.