Pick a puzzle, take five minutes
Four small games that run entirely in your browser. No account, no download, nothing to install — and your scores stay on your own device.
2048
Slide the tiles, merge matching numbers and try to build a 2048 tile.
Flow Free
Connect each pair of coloured dots with an unbroken path, then fill every cell.
Wordle
Guess the hidden five-letter word in six tries using the colour feedback.
Minesweeper
Clear an 8×8 minefield using the numbers on the safe squares. Ten mines to flag.
Utilities for the practical parts
A focus timer, a matrix calculator and a rhyme finder. All three run in your browser — no account, nothing uploaded.
Pomodoro Timer
Work in a 25-minute block, take a five-minute break, and a longer one every fourth round.
MathematicsMatrix Calculator
Add, subtract and multiply 2×2 or 3×3 matrices; find the determinant, transpose and inverse.
LanguageRhyme Finder
Type a word and get the words that share its ending sound.
What the games are really doing
New pieces on the puzzles behind the puzzles: what makes an opening guess good, what a move actually costs, and whether any of it makes you sharper. Each ends with something you can try in five minutes.
The best Wordle opening word, and when to break it
Openers are not magic. The best first guess splits the answer pool most evenly — and three situations where the usual advice stops paying.
StrategyHow many moves does it take to reach 2048?
A 2048 tile is 1,024 units of two, and every move adds one tile. Those two facts fix the number almost completely.
StrategyIs your first Minesweeper click always safe?
In most versions, yes — because the board is built around your click. What that guarantee is worth, and how to spend the free move.
AttentionHow many Pomodoros before a long break, and why four
Four is a convention with neat arithmetic behind it, not a finding. What the break research actually supports.
Cognitive ScienceIs Flow Free genuinely good for your brain?
It trains planning inside the game. Whether that transfers is the same question — and the same answer — as every other training claim.
Friends of the lab
Other small, independent corners of the web we think are worth your time.
- Zillion Prompt Hub
- China Travel Simplified — China is closer than you think.
- zenhexa —Ancient I Ching wisdom for modern self-reflection.