Logic for the Modern World
One dev. Two AIs. Hundreds Of bad arguments to debunk.
I'm a solo developer who hope to help others as well seek truth and facts with logic while the internet is littered with fallacies. I built Reason.ovh to help people develop critical thinking into a daily micro-habit—something fast, fun, and sharp.
While I design the mechanics and curate the vibe, I use state-of-the-art AIs to help generate and vet the hundreds of scenarios you see here. This allows me to keep the game fresh for users every single day as long as you have not exhausted all the questions with modern contexts that can be fun and laughable at times.
My goal isn't to tell you what to think, but to help you master how to think. If you can spot
a 'Slippery Slope' in a cat meme, you're one step closer to spotting it in the real world.
Frequently Asked Questions
How does Reason.ovh help me learn to spot logical fallacies?
Reason.ovh uses gamified micro-scenarios to train your brain to recognize flawed reasoning in under 60 seconds.
Instead of dry textbooks, you'll practice identifying common fallacies like:
- Strawman arguments (misrepresenting someone's position to make it easier to attack)
- Slippery slopes (claiming one small step will inevitably lead to extreme consequences)
- Ad hominem attacks (attacking the person instead of addressing their argument)
- False dilemmas (presenting only two options when more exist)
- Appeal to emotion (manipulating feelings instead of using logic)
Practice with realistic examples from social media, workplace debates, and political discussions. Each scenario
includes instant feedback with detailed explanations, making this one of the most effective critical thinking exercises for adults. Check the Fallacy Library for the complete list with definitions and examples.
Is this a daily game like Wordle?
There is a Daily Gavel that can be found at the menu - a daily browser game that drops 3 new logic challenges every morning at midnight UTC—just
like Wordle or NYT games. If you're searching for new daily games 2025 or an alternative to NYT games,
this is perfect for your morning routine. Build your streak, track your progress, and make critical thinking part of your
daily ritual. No downloads required—play directly in your browser at work or home.
Can this help me identify manipulation and fake news in real life?
Absolutely. Reason.ovh scenarios are modeled after real internet comments, toxic tweets, political debates, and
boardroom gaslighting. Learning to spot logical fallacies helps you recognize common manipulation
tactics you encounter daily:
- Strawman fallacies in political debates (when politicians misrepresent their opponent's position)
- False dilemmas in news headlines ("You're either with us or against us")
- Appeal to emotion in advertising (using fear or desire instead of facts)
- Bandwagon fallacies on social media ("Everyone believes this, so it must be true")
- Cherry-picking data (showing only statistics that support one side)
Many users report improved ability to identify fake news, detect cognitive biases like confirmation bias,
and see through manipulative arguments online. It's practical internet literacy training disguised as a game.
Is this a free brain training game?
Yes! Reason.ovh is completely free brain training with no paywalls or subscriptions. Play unlimited scenarios
in Dojo or stick to the Daily Gavel for your daily dose of mental models for decision making. Unlike
other brain training apps, the focus here is on real-world cognitive skills—not memorization or pattern matching. Think of it
as brain training games free that actually make you sharper in everyday conversations and decisions.
What is a "Reasoning Profile"?
At the end of each session, we calculate your mental model rank. Are you a "Supreme Justice" or a
"Delusional Guru"? Share your verdict and see how your streak compares to others. It's gamified
critical thinking practice that's actually fun.
Is there a new challenge every day?
There is the Daily Gavel (at the menu), like Wordle, Reason.ovh drops 3 new 'Trials' tailored for each user every morning at midnight UTC. Build your streak,
master new fallacies, and make daily brain training part of your routine.
How do you generate scenarios?
I use AI to generate diverse scenarios spanning pet logic, internet culture, workplace dynamics, and
more. Each scenario is then vetted by a second AI for logical accuracy and quality. This dual-AI pipeline
ensures you get fresh, relevant, and educational content every day.
How is my progress saved? Will I lose my stats if I clear my browser?
Your progress, stats, and daily streaks are stored locally in your browser using localStorage—not
on any server. This means:
- ✅ Privacy-first: Your data never leaves your device
- ⚠️ Browser-specific: Stats are tied to the specific browser and device you use
- ⚠️ Clearing data = losing progress: If you clear browser data/cookies, you'll lose all your stats and streaks
- ⚠️ Incognito mode: Your progress won't be saved in private/incognito windows
💡 Tips to keep your stats safe:
- Use the same browser and device each time you play
- Avoid using incognito/private browsing mode
- Be careful with browser cleaners (CCleaner, etc.) that auto-clear localStorage
- Don't clear "Site data" or "Cookies and site data" in your browser settings
- Bookmark
https://reason.ovh and use it consistently
Trade-off: This privacy-first approach means no account needed, but also means no cloud backup.
Your stats live only in your browser. Check the Stats Dashboard to see
your current progress.
Why Critical Thinking Matters
In an era of toxic threads and boardroom gaslighting, critical thinking isn't just a soft skill—it's
a survival kit. Most logic tools are dry and academic, but Reason.ovh turns logical fallacy practice
into a daily ritual.
Inspired by the daily habit of games like Wordle, the "Daily Gavel" challenge gives you fresh scenarios
every morning. Whether you're trying to spot a strawman in a political debate or avoid the sunk cost
fallacy in your personal life, this daily brain training helps you navigate the noise.