Introduction
Codenames is a word association party game designed by Vlaada Chvatil and published by Czech Games Edition in 2015. Two teams compete on a 5x5 grid of word cards. Each team has a spymaster who knows which cards belong to which team. Spymasters give one-word clues with a number, pointing their operatives toward the right cards. The game won the Spiel des Jahres in 2016 and has sold over 10 million copies. This analyzer helps spymasters find connections between words on the grid. Enter your 25 words and the tool suggests potential clue associations. Everything runs in your browser.
What this tool does
- Word association analysis: examines the 25 words on a Codenames grid and suggests potential one-word clues that connect multiple target words.
- Team-aware filtering: mark words by team (red, blue, neutral, assassin) so the analyzer avoids suggesting clues that point to opponent words.
- Clue scoring: each suggested clue shows how many target words it connects and whether it risks hitting neutral or assassin cards.
- Semantic grouping: groups words by shared themes like animals, food, geography, or science to help spymasters spot connections.
- All analysis runs client-side. No data is sent to any server.
How this tool works
Enter the 25 words from your Codenames grid. Mark each word as red team, blue team, neutral, or assassin. The analyzer runs each word through a series of thematic pattern matchers covering categories like animals, colors, foods, countries, body parts, weather terms, and more. When two or more words from the same team match a pattern, the analyzer suggests that pattern as a potential clue. For example, if "shark", "dolphin", and "whale" are all red team words, the analyzer suggests "marine" or "sea" as a clue connecting them. The tool also flags words from the opposing team or the assassin card that share the same pattern, warning the spymaster of risk.
How the Codenames board game works
Codenames was created by Czech designer Vlaada Chvatil and published by Czech Games Edition in 2015. According to the Wikipedia article on Codenames), the game consists of a 5x5 grid of word cards. One card is the assassin, seven are neutral, and the remaining seventeen are split between the two teams (eight or nine each, depending on which team starts). The spymaster sees a key card that maps each grid position to a team. Operatives see only the words.
The spymaster gives a clue consisting of a single word and a number. The number tells operatives how many cards on the grid relate to that clue. For example, "ocean 3" means three cards relate to "ocean". Operatives discuss and pick cards they think match. If they pick a card from their team, they can keep guessing. If they pick an opponent's card, the opponent gets the point and the turn ends. If they pick a neutral card, the turn ends with no points. If they pick the assassin, they lose immediately.
The game won the Spiel des Jahres in 2016, the most prestigious award in board gaming. The jury cited its elegant design and broad appeal. Codenames has sold over 10 million copies worldwide and has been translated into more than 30 languages. It has spawned variants including Codenames: Pictures, Codenames: Deep Undercover (an adults-only version), and Codenames Online. The game is popular in both casual and hobbyist circles because it plays in 15 minutes and supports up to 8 players.
How to use this tool
- Enter the 25 words from your Codenames grid into the input field.
- Mark each word as red team, blue team, neutral, or assassin.
- The analyzer scans for thematic patterns connecting words from the same team.
- Review the suggested clues. Each clue shows which target words it connects and whether it risks hitting opponent or assassin cards.
- Use the suggestions as a starting point. The final clue choice is yours, since the analyzer cannot detect wordplay or cultural references.
- Cross-reference suggestions with your knowledge of your operatives' vocabulary and associations.
Real-world examples
Finding a marine connection
A spymaster has "shark", "dolphin", "whale", and "octopus" as red team words. The analyzer identifies all four as marine animals and suggests "marine" or "sea" as a clue with the number 4. It also flags that "submarine" on the blue team shares the same pattern, warning the spymaster that the clue "marine" could lead operatives to pick the wrong card. The spymaster narrows the clue to "ocean 3" to avoid the risk.
Avoiding the assassin
A spymaster wants to connect "needle", "thread", and "button" with the clue "sewing 3". The analyzer flags that "scissors" is the assassin card and shares the same pattern. The spymaster changes the clue to "tailor 2" to connect only "needle" and "thread", avoiding the risk of operatives picking "scissors" and losing the game instantly.
Cross-category connections
A spymaster has "saturn", "mars", and "mercury" as blue team words. The analyzer identifies them as planets and suggests "planet 3". It also notes that "mercury" could relate to the element or the car brand, and that "saturn" could relate to the car brand. The spymaster uses "planet 3" because the planetary association is the most direct and least ambiguous for their operatives.
Comparison with similar methods
| Method | Complexity | Typical use |
|---|---|---|
| This analyzer | Pattern matching + thematic grouping | Suggesting clues for same-team word connections |
| Manual spymaster play | Human word association | All clue types including wordplay and cultural references |
| Word embedding AI | O(n^2) semantic similarity | Research-level clue generation |
Limitations or considerations
The analyzer detects category-based connections like animals and foods. It cannot detect wordplay connections like homophones or hidden words. For example, if the clue is meant to connect "fire" words (fireplace, firefly, firework), the analyzer may not detect this because it relies on category matching rather than substring analysis. The pattern list covers common categories but may miss specialized themes. The analyzer is a hint tool for spymasters, not a replacement for human creativity. The final clue choice always rests with the spymaster, who knows their operatives' knowledge and associations. For other puzzle tools, try the Mastermind solver, the Fallout terminal hacking tool, the frequency analysis tool, or the Caesar cipher.
Frequently asked questions
Who designed Codenames?
Vlaada Chvatil designed Codenames. He is a Czech board game designer known for games like Through the Ages, Galaxy Trucker, and Dungeon Lords. Czech Games Edition published Codenames in 2015. Chvatil is known for combining deep strategy with accessible rules, and Codenames is his most commercially successful design.
What is the Spiel des Jahres?
The Spiel des Jahres is the German Game of the Year award, considered the most prestigious award in board gaming. Codenames won it in 2016. The jury evaluates games on design elegance, clarity of rules, and broad appeal. Winning the award typically drives significant sales, and Codenames went on to sell over 10 million copies.
How many words are on a Codenames grid?
A standard Codenames grid has 25 words arranged in a 5x5 layout. One word is the assassin card, seven are neutral, and the remaining seventeen are split between the two teams. The starting team gets nine cards and the other team gets eight. The spymaster sees a key card that reveals which words belong to which team.
Can the analyzer detect wordplay clues?
No. The analyzer uses thematic pattern matching for common categories like animals and foods. It cannot detect wordplay like homophones or hidden words that span multiple cards. For example, if the intended clue connects words that can follow "fire" (fireplace, firefly, firework), the analyzer will not detect this because it does not perform substring or prefix analysis. Human creativity is still needed for wordplay-based clues.
How does the clue number work in Codenames?
The spymaster gives a one-word clue followed by a number. The number tells operatives how many cards on the grid relate to that clue. For example, "ocean 3" means three cards relate to "ocean". Operatives can guess up to that many cards plus one extra. If they guess correctly, they can keep going. If they guess wrong, the turn ends. The spymaster cannot give additional hints during the turn.
Conclusion
The Codenames analyzer helps spymasters find category-based connections between words on the grid. Enter your 25 words, mark them by team, and review the suggested clues. For more puzzle tools, try the Mastermind solver, the Fallout terminal hacking tool, the frequency analysis tool, or the Caesar cipher.