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Mystery Boxes is a codebreaking puzzle game. Send 4-digit signals to a mysterious artifact, which will respond with another sequence. Look for patterns in the responses to identify the rules, then use this information to produce the target response.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
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Help intrepid explorer Maya Robinson investigate a set of ancient cube-like artifacts buried deep in the jungle!
When you send a 4-digit signal to the Mystery Box, it will transform it according to a set of secret rules.
Sending 1234 to the box might give you 8642.
Sending another number, like 2244, gives you a different result like 8844.
Through experimentation and deduction, you can figure out the rules: in this case, double each digit, then flip the number backwards.
Once you figure out the rules, use them to obtain the target. With the rules above, what input would produce 6424?
Each rule creates a particular pattern of digits. Seems simple enough, right? But there's a catch: each box has multiple rules! The box takes the result of the first rule and applies a second rule to it. Can you find the patterns and use them to activate the boxes? As you progress, boxes will have more rules of increasing complexity.
Maya is also happy to assist you as you solve the puzzles. She'll give you assistance with more challenging rules, give you ideas of possible solutions, and offer you tips and advice. If you get stumped, don't be afraid to ask her for a hint!
As you explore and solve puzzles, you'll visit a fiery volcano, an abandoned crypt, a secret ice shrine, and more exciting locations!
Uncover the secrets of the Mystery Boxes by unlocking and reading Maya's journal entries.
Collect badges by solving puzzles quickly, in few moves, or without using hints.
Complete 20 different challenges to unlock bonus cosmetic upgrades. Can you find them all?
Randomly generated puzzles: you'll never run out of new boxes to solve!
36 levels of difficulty, from basic to beyond insane!
Share puzzles with friends and challenge them to beat your score!
An intriguing story told through journal entries and letters.
Customize Maya and your interface with fun cosmetic upgrades!
