Logic, numbers, and puzzles — right in your browser, no sign-up needed.
Fill the grid with 0s and 1s — no three in a row.
The classic — each number from 1 to 9 exactly once per row, column, and block.
Find all mines without uncovering a single one.
Slide tiles together and reach the magic 2048.
Guess the word in six tries — in German.
Find all pairs — test your memory.
Conway's Cellular Automaton — place cells and watch them live and die.
Guess the word letter by letter — before the gallows are complete.
Klondike, FreeCell, and Spider — the classic card games.
Control the snake and collect as much food as possible.