01000100 01110010 01101111 01110000 01110000 01100101 01100100
Something was left behind. Can you find it?
A chain of cryptographic puzzles. Each solution opens the next. Some have cracked it. Most haven't.
Start the chain — $24.99Secure checkout via Stripe.
A puzzle game for people who think in code.
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Delivered by email
Puzzle #1 arrives in minutes. No downloads, no setup.
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A chain, not a list
Each answer unlocks the next. You can't skip ahead.
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No expiry
Take days. Take months. The chain waits.
A glimpse of what's inside.
# transmission received — 2024.01.17 03:42 UTC dHJhbnNtaXNzaW9uIG9uZQ== # coordinates encoded. begin where the bit was dropped. # — db
Buying for someone else?
Enter their email at checkout. The first puzzle lands directly in their inbox — no gift cards, no codes to copy-paste.
Give as a gift — $24.99Do I need to know how to code?
The puzzles reward technical knowledge — programming, cryptography, networking. You don't need all of it. You'll need to learn some of it.
Is there a time limit?
No. Take as long as you need. The chain doesn't expire.
What if I get stuck?
Getting stuck is part of the design. There are no hints. The puzzle is solvable — others have solved it.
What do I get for $24.99?
One purchase unlocks the full chain. Delivered by email. One-time payment, no subscription.
One product. One price. The chain is waiting.
Start the chain — $24.99