K3N8HCrack the Code
Ten puzzles, easy to hard: name the technique that cracks each secret message, then spot the flaw in broken code.
K3N8H Verified
- ✓ Real preview shipped
- ✓ License terms specified
- ✓ Actually run before listing
- ✓ Stated limitations verified
Each run mixes two kinds of puzzle. In a cipher puzzle you are shown a coded message and must choose the technique that cracks it (a Caesar shift, Base64, Morse, a rail fence, frequency analysis on a substitution, a Vigenere key) and then type the decoded text. In a fix-the-code puzzle you are shown a short JavaScript function with one flawed line: click the line, then choose the replacement that makes it correct. Puzzles get harder as the run goes on, hints cost points, and every explanation tells you why the answer works. Earns XP and leaderboard places in the K3N8H arcade when you are logged in.
Runs where you work
Built for a private workflow: local-first execution, no forced cloud dependency, and a clear path to use it on a laptop or phone without an API key.
Included value
Each product is designed to feel personal, useful, and complete without turning your work into an external dependency.
Free tools that go with this
These run in your browser, need no account, and keep what they remember on your own device.
Preview
Open full preview →This product is a live, in-browser experience — not a file to preview.
Free to play right now, in this browser, no download or account required.
Play now →Every cipher is a pure, reversible function tested against its own decoder, and every fix-the-code puzzle is actually executed: the flawed version must fail its own test cases and exactly one of the offered replacements must pass them all.
What's included
- Live playable game at /play/code-breaker (free, unlimited plays)
- Ten cipher techniques and seventeen broken-function puzzles, with a freshly generated message every run
- An explanation after every puzzle: why the technique works, why the bug was a bug
- Arcade XP, achievements and leaderboard when logged in
- Commercial license: white-label/embed this game on your own site
Built with
Runs in your browser: nothing to install
scripts/test-code-breaker.ts round-trips every cipher, checks that each technique option list contains exactly one correct answer, and runs every bug puzzle's code: the flawed line fails and exactly one offered fix passes. Two deliberately broken variants (a wrong option that secretly works, a broken rail fence) were confirmed to fail the suite. Not yet listed for real purchase on Whop/Gumroad (live: true, matching the precedent for products awaiting a checkout listing): creating a payment-platform listing needs a separate, explicit go-ahead.
License & pricing
Try it before you buy. This tool is free to use on the site: open it.
Free to Play
Free
For your own work or your own business. No client work, and no resale or redistribution of the files.
Embed / White-Label License
$35
Use across client work or resell the output. No reselling the source files/template itself.
Refund terms are set per product, and checkout through Whop or Gumroad has its own buyer protection. Questions before you buy? Ask in the chat or on the feedback page; we'll help where we can.
Interactive Games — publishing standard
- Required deliverables: Live playable game, no download required, Commercial embed/white-label license (optional tier)
- Disclaimer required
- Proof-it-runs evidence required
- Personal vs. commercial license tiers offered
Runs entirely in the browser. Scope is stated honestly (exact number of careers/paths/events) rather than claiming to model everything.
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