puzzlecub.
A LITTLE THOUGHT. A BRIGHT DISCOVERY.

Made for the moment
something clicks.

PuzzleCub is an independent browser-game collection by Neurantra LLC. We make puzzles built around simple rules, clear feedback, and the pleasure of figuring something out.

Choose your kind of play

Our browser collection brings together Chaturang, Alphadoku, Maze Words, Slide & Sort, Mapopia, and Fill the Jar. Explore strategy, words, geography, letters, numbers, and shapes. Every game is free to play, with no account or purchase required.

Choose a game on the homepage, then open its dedicated play page. This browser remembers your choice. Settings and saved progress stay on your device; clearing browser data removes them.

Web games and mobile apps

The browser collection lives at puzzlecub.com. Our mobile app directory lives at puzzlecub.app. The existing PuzzleCub mobile app remains a separate product; its bundled games are not part of the web collection. Our standalone mobile editions remain separate products, and their purchases and saved progress do not transfer to this website.

How we check our puzzles

Classic uses the same constraint engine as our mobile game, checking Sudoku and the hidden-line rule together. Mega accepts clue removals only with a constructive uniqueness proof. Its initial difficulty levels describe clue density. Our English word library contains 2,671 validated isogram targets; its editorial review was AI-assisted, not independent human review of every entry.

Help us make it better

Found an awkward phrase, a confusing control, or an accessibility problem? Tell us the mode, difficulty, browser, and what happened. Please do not send payment information or passwords.

hello@neurantra.com