Core

Core cognitive drills for attention, memory, logic, and estimation.

Attention Blink

Spot two targets in a rapid stream of flashing items.

Focus Grid

Memorize a lit pattern, then recall it perfectly.

Dual N-Back

Match position and letter from N steps ago.

Sustained Vigilance

Watch for rare targets in a long stream of distractors.

Mental Map Navigation

Track directional sequences on a hidden grid, then report your location and heading to start.

Digital Logic Gates

Evaluate chained AND, OR, NOT, and XOR circuits from live input bits.

Arithmetic Tetris

Drop number blocks and clear adjacent pairs that sum to the target before overflow.

Stroop Shift

Name the correct color under interference with selectable twists: rule pulses, memory echoes, emotion spikes, or mixed mode.

Maze Routing

Predict the correct boundary exit from a given entry in a classic branching maze where only one route connects.

Trainers

Skill-focused symbol systems and encoding practice.

Morse Code Trainer

Practice decoding and encoding Morse signals with timed rounds and keyboard controls.

Braille

Train both directions with Grade 1 braille: decode cells into letters and encode letters back into dot patterns.

Phone Memory

Memorize one name-and-phone contact card, then recall both pieces exactly from memory.

License Plates

Memorize a country and a realistic license plate, then recall both exactly from memory.

Word Games

Lexical search, semantic reasoning, and language pressure loops.

Word Forge

Build as many valid words as possible from a generated 6-12 letter set and score by word length.

Word Tetris

Drop weighted letter blocks and clear horizontal or vertical dictionary words in any reading direction.

Word Memory Recognition

Judge each word as seen-before or new while balancing speed and accuracy across a mixed memory stream.

Semantic Rank

Find the hidden word by semantic closeness, with each guess ranked against the full dictionary.

Definition Hunt

Solve adult-level one-word definitions drawn from a cached dictionary-backed vocabulary bank with adaptive difficulty.

Odd One Out

Find the subtle outsider in LLM-generated semantic sets where three words share a tighter relation than the fourth.

Under Construction

These games are being improved and actively expanded.

Semantic Odd One Out

Find the outsider by semantic embeddings: three words must cluster under α while one sits farther than β from their centroid.