About LogicQuest Play

How it works

LogicQuest teaches the building blocks of clear thinking — spotting the tricks a weak argument uses, and building the logic behind a strong one. Inspector Logos, your detective mentor, asks questions instead of handing you answers.

Fallacy Detective — read a real-world argument and name the fallacy at work. Get it wrong and Inspector Logos nudges you toward what to look for, never the answer.
Logic Lab — fill in the truth table for a compound statement built from AND, OR, NOT, IF-THEN and IF-AND-ONLY-IF. The lab checks every row and shows you the ones to rethink.
Venn Logic — read two premises and decide whether the conclusion really follows. A Venn diagram helps you see where the sets overlap.
Argument Mapper — take an argument apart into its claim, its premises, and its objections, so you can see how the reasoning fits together.
Logic Grid — a classic deduction puzzle. Read the clues, mark the ✓/✗ grid to eliminate what can’t be, and land on the one match-up that fits. Every puzzle has exactly one solution.
The Rogues’ Gallery — a reference of every fallacy and valid form, with a real example and a plain explanation of why it’s a trick.
Concept kits — 16 short question rounds across the whole critical-thinking curriculum.

Meet the cast

Every fallacy in LogicQuest is a character — Ad-Hominem Hannibal attacks the person, Bandwagon Bran follows the crowd, False-Dichotomy Fia insists there are only two choices — and the valid forms like Modus-Ponens Mo show reasoning done right. You can read their stories over on the cast pages.

Our privacy promise

LogicQuest Play is free, works offline, and collects nothing. No accounts, no ads, no tracking, and no data ever leaves your device — your level, streak, and best scores are saved only in this browser.

Being wrong is part of it

Every good thinker changes their mind sometimes. A wrong answer here never costs you anything — it just points you to the stronger reasoning next time. That’s exactly what a logic detective learns to do.