Black Box Logic Lab

Probe mysterious boxes, build visual rules, and test your ideas. Try 15 puzzles and Sandbox for up to 30 days, then unlock the full game with one purchase.

Every black box has a hidden rule. Can you figure it out?

Black Box Logic Lab turns curiosity into a hands-on puzzle game. Choose inputs, observe outputs, and build a model that explains what happens inside. Test your idea against hidden cases and discover whether your reasoning holds up.

EXPLORE 100 PUZZLES Progress through six difficulty tiers, from approachable number patterns to logic, text, collections, and stateful systems. Pin useful observations, write your own hypothesis, and work toward a solution at your pace.

BUILD WITH VISUAL BLOCKS Connect typed inputs, operations, constants, and outputs on a spacious canvas. Pan, zoom, expand, and fit your workspace. Basic keeps your first steps focused; Advanced opens all 61 operations.

GET A HINT WHEN YOU CHOOSE Solution Blocks filters the library to block types used by one valid solution. A confirmation protects you from revealing the hint accidentally. You still choose the values and connections.

PROVE YOUR THINKING Submit your model against observed, edge, and hidden cases. Correct alternate solutions count. Open the box, review the rule, and take on the next challenge.

CREATE IN SANDBOX Build and save your own experiments beyond the campaign.

YOUR OWN QUIET LAB No ads, tracking, or app account. Progress, notes, and saved creations stay on your device. Gameplay works offline after trial or purchase access is verified. Designed for iPhone and iPad, with an English interface, VoiceOver labels, and accessibility options.

FREE TRIAL, THEN ONE PURCHASE Download free. Activate the free 30-day Trial to play puzzles L-01 through L-15 and Sandbox. The trial ends after 30 days or when you complete L-15, whichever comes first.

After the trial, gameplay requires Full Game Unlock: a one-time in-app purchase of $2.99 USD. Local App Store prices may vary. It unlocks all 100 campaign puzzles and Sandbox. No subscription and no automatic charge when your trial ends. Your saved progress is kept.

An internet connection and an Apple Account are required to activate the trial, buy, or restore. Restore Purchases is available in Settings and on the access screen. Restoring a trial keeps its original start date.

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