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Write, test, and break through. A programming puzzle game about the joy of trial and error.
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.
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Write, test, and break through.
A programming puzzle game about the joy of trial and error.
1. Solve Problems with Code
Build programs to solve each challenge.
2. Run and Check Instantly
Run your code on the spot and adjust it while checking the results.
3. Pass the Tests to Clear the Stage
Submit your code for automatic judging. If it works correctly, you clear the stage.
