# Puzzle Theory

> The premium home for daily logic games — beautifully designed word, number, logic, geography and memory puzzles that everyone plays together, every day.

Puzzle Theory is a daily brain-games site with 20 free games across five categories. Players get one shared challenge per game per day, plus unlimited practice modes and a 30-day archive for Pro members. No account is required to play any daily puzzle.

## Pages

- [Home](/): Overview of Puzzle Theory and today's featured games.
- [Games](/games): The full catalog of daily brain games.
- [Daily challenge](/daily): Today's puzzles across every game.
- [Archive](/archive): Past daily challenges from the last 30 days.
- [Leaderboard](/leaderboard): Top players and streaks.
- [Blog](/blog): Puzzle strategy, design notes, and updates.
- [Comparisons](/compare): Honest side-by-side comparisons against well-known rival games.
- [About](/about): The story and philosophy behind Puzzle Theory.
- [Pricing](/pricing): Free tier and Pro subscription.

## Word games

- [Lexicon](/games/lexicon): Deduce a hidden five-letter word from counts only, no positional clues.
- [Quintle](/games/quintle): The classic five-letter guessing game with green/yellow/grey feedback.
- [Categories](/games/categories): Sort sixteen words into four hidden groups, four mistakes allowed.
- [ZigZag](/games/zigzag): Trace every themed word through a letter grid in any direction.
- [Hive](/games/hive): Build as many words as you can from seven letters around a mandatory center letter.
- [Weave](/games/weave): Swap scrambled tiles until three across and three down words all lock into place.
- [Inkwell](/games/inkwell): A 5x5 daily mini crossword.
- [Cipher](/games/cipher): Crack a daily substitution cipher hiding a famous quote.

## Number games

- [Target](/games/target): Combine six numbers with four operations to reach a target.
- [Equate](/games/equate): Guess a hidden eight-character equation in six tries, Wordle-style.

## Logic games

- [Sudoku](/games/sudoku): The classic 9x9 logic puzzle with three difficulty tiers.
- [Domino Regions](/games/domino): Fill colored regions with dominoes so every constraint is satisfied.
- [Knot](/games/knot): Drag points until no two connecting lines cross.
- [Queens](/games/queens): Place one crown in every row, column and colored region, no two touching — a free alternative to LinkedIn's Queens.
- [Tango](/games/tango): Balance a grid of suns and moons with no three in a row — a free alternative to LinkedIn's Tango.

## Geography

- [Atlas](/games/atlas): Guess a masked country name with distance-and-direction feedback on every guess — a free alternative to Worldle and Flagle.

## Knowledge & memory

- [Round](/games/round): A five-question daily trivia round across geography, history, science and the arts.
- [Frame](/games/frame): Guess a movie or TV title from an emoji clue.
- [Recall](/games/recall): Watch a growing pattern flash across a grid, then repeat it exactly.

## Optional

- [Sign in](/auth): Account access for tracking streaks and history.