About Cosmic Code

Cosmic Code is a free code-breaking puzzle from tlinki. Crack the hidden row of planets using the clues from each guess. Play endless levels whenever you like, or take on the daily code, one puzzle a day shared by every player on Earth. There are no words to spell, so it works in any language. Play on your phone, tablet or computer, with no sign-up. You can even install it like an app.

Levels and ranks

• Cadet (levels 1–10): 4 slots, 5 planet types, 7 guesses.
• Pilot (11–25): 4 slots, 6 planet types, 6 guesses.
• Navigator (26–50): 5 slots, 6 planet types, 6 guesses.
• Commander (51–100): 5 slots, 7 planet types, 6 guesses.
• Captain (101–150): 6 slots, 7 planet types, 6 guesses.
• Legend (151 and up): 6 slots, 7 planet types, only 5 guesses.

Solve a level in few guesses to earn up to 3 stars. Replay any level for a fresh code and a better score. If you run out of guesses, try again with a new code.

How to play

1. Tap planets to fill the row (or press the number keys), then press Check.
2. Each planet lights up: green ✓ means right planet, right spot; yellow ⇄ means the planet is in the code but somewhere else; dark means there are no more of that planet in the code.
3. Use what you learn to make your next guess. Crack the code in six tries or fewer!

Tips

• Your first guesses should test as many different planets as possible.
• Planets can repeat, but never more than twice in one code.
• A dark planet next to a green one of the same kind means there is only one of it.
• The keys at the bottom remember what you've learned: green and yellow keys are in the code, faded keys are not.

When is the new puzzle?

A new daily code arrives every day at midnight UTC, the same moment all over the world. The countdown in the stats window shows exactly how long you have to wait. Solve it on consecutive days to build your streak. Levels are always available, any time.

Share your result

After you finish, tap Share result to send a spoiler-free grid of coloured squares to your friends. They can see how you did without seeing the answer. Can they beat you?

More cosmic games

Dodge black holes in Cosmic Critters Run, or merge planets into a black hole in Cosmic Merge.

Privacy

Your levels, stars, stats and streak are saved only in your own browser. This page shows ads from Google AdSense, which help keep the game free.

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