Logic Islands: Deduction Game

1.0.1

Logic Islands Studio

0.00

0 reviews

500+
Downloads

Free

Handcrafted logic and deduction puzzles. Three brain teasers daily.

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Download from Google Play iOS version

About Logic Islands: Deduction Game

Logic Islands: Deduction Game is a puzzle app developed by Logic Islands Studio.

Download Statistics

Logic Islands: Deduction Game has been downloaded 510 times. In the last 30 days, the app was downloaded 160 times.

User Ratings

The app has no ratings yet.

App Information

Logic Islands: Deduction Game is FREE to download. The APK download size is 198.83 MB. The latest version available is 1.0.1. The last update was on June 30, 2026.

Technical Requirements

The app has a content rating of Low Maturity. The app has been available on Google Play June 2026.

Description

Logic Islands is a world of handcrafted deduction puzzles, built by a mathematician and a neuroscientist for people who like a real problem.

Not logic grids. Not another Sudoku clone. Not pattern-matching dressed up as a brain game. These are original deduction puzzles in the tradition of Raymond Smullyan's knights and knaves logical puzzles: islanders who can only tell the truth or only lie, and your job is to work out who is who from what they say. From there it gets stranger. You reason about what characters know, what they could have said, what the truth would have to be, and what questions you must ask.

Every puzzle is made by hand by a mathematician who has spent over a decade inventing them. No AI, not now, not ever. Each one was tested on hundreds of real people and refined until it was exactly hard enough, the progression exactly right. All explanations are handwritten too.

Ten islands, each with its own logic
You begin on the island of truth-tellers and liars. Beyond it lie nine more, each with its own residents, its own rules, and its own way of bending the truth. Enter a mysterious gallery of deceit, play the detective and weigh the reliability of up to eight witnesses in whodunits, and learn to ask the right questions of the right people, in the right order. The rules are taught through play, the difficulty climbs toward the genuinely mind-bending, and new islands keep arriving.

A fresh trio every day
Three new puzzles land each morning, separate from the island puzzles: a warmup, a challenge, and a master. Small enough to fit in a coffee break, but stimulating enough to stay with you all day. Keep your streak alive and climb the weekly and all-time leaderboards against everyone solving the same set.

Help at every step, never just the answer
Being stuck is part of it, but you are never stranded. Professor Logic gives a targeted nudge when you want one and a refresher on the idea in play. Once you solve a puzzle, he walks you through exactly why the answer holds. You come away understanding how to reason your way through even the most complicated problems.

Real reasoning, in the shape of a game
The skills here are the genuine article: the deductive reasoning used in mathematics and proof, relied on by anyone who has to think clearly under pressure, and tested on the LSAT and GRE. Propositional logic, knights and knaves, strategic questioning, reasoning about what others know, possibility and necessity, and more exotic logics. You'll learn to read AND, OR, XOR, IF-THEN, NOT, and a great deal more, as fluently as you read English. You will not feel like you are studying. You will just get sharper.

Who it's for
Puzzle solvers who have run out of things that truly challenge them. People who want more depth from their games. Anyone who loves paradoxes, proofs, or that satisfying moment when one detail forces every other piece into place. People who like a good argument and take pride in thinking things through. Mathematical, philosophical, and computing minds. Anyone preparing for the LSAT or GRE, or just looking to improve their logical reasoning skills. And anyone who misses the feeling of working something out entirely on their own, and wants to protect that.

Logic Islands is free to download. You get the first island and your first five days of daily trios free, no account required, no ads. When you want the rest, Logic Islands Pro opens every island, every daily puzzle, and every island still to come, plus personal analytics.

Think again.

Questions, feedback: hello@logicislands.com
Report a bug: support@logicislands.com.
Press: press@logicislands.com.
Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your Google Play subscriptions. Restore Purchases is available in profile settings.

Terms of Use: https://logicislands.com/terms
Privacy Policy: https://logicislands.com/privacy

FOLLOW US: https://x.com/LogicIslandsApp

Recent changes:
Daily puzzles now count toward your leaderboard standing, smoother experience for returning users signing in with email to recover their progress on a new device, and there is a fresh round of fixes and polish throughout.

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More data about Logic Islands: Deduction Game

Price	Free to download
Total downloads	510
Recent downloads	160
Rating	No ratings
Ranking	Not ranked
Version	1.0.1
APK size	198.8 MB
Number of libraries	?
Maturity	Low Maturity
Ads	NO ads

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Logic Islands: Deduction Game compared with similar apps

Common keywords of similar apps

Islands People Island Daily Truth Real Questions Https Handcrafted Mathematician Knights Knaves Lie Reason Tested Rules Bending Learn Fresh Day Answer Lsat Gre Read Things Free Press Subscriptions Terms Privacy Logic Puzzles Deduction Puzzle Play Reasoning Game Brain Logical Challenge Skills

Keywords missing from this app

Games Clue Solve Clues Sudoku Mystery Detective Crime Relaxing Gameplay Challenges Master Enjoy Case Levels Story Offline Stories Mind Solving Thinking Hidden Storyteller Solution Recent Experience Grid Level Guessing Cases Find Features Solved Unique Fans Difficulty Simple Classic Uncover

Downloads over time

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Logic Islands: Deduction Game has been downloaded 510 times. Over the past 30 days, it has been downloaded 160 times.

Changelog of Logic Islands: Deduction Game

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Developer information for Logic Islands Studio

Logic Islands Studio

hello@logicislands.com

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Comments on Logic Islands: Deduction Game for Android

★★★★★ Neel Pal · Jul 4, 2026

Only island 1 is free, and it lasts less than 10 minutes. The first few daily puzzles are free. All the free puzzles are great, they're quite fun and not trivial. Playable offline. Smooth UI and UX. Unfortunately the app discourages non-Western folks from developing countries from playing the full version by not supporting PPP. I hope they do something about this. Uninstalling the app until then.

Google Play Rankings for Logic Islands: Deduction Game

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Technologies used by Logic Islands: Deduction Game

34 permissions

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