Alternatives
Products that do what FACT OFF does
Test your intuition with real-world data
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Hi HN! Worked on this side project for a while and wanted to share it. It's free to play.
Oct 2025 · detective.wiki
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I made this game for my children to play, as they are heavily into Wordle, and I thought they'd also like something maths based! Every puzzle is solvable and has at least one solution (usually more). There is a kids mode in the settings, plus a hard mode for extra difficulty.
2022 · summle.net
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This is a game I wrote over the last month and a bit. The effort allocation was pretty different from what I've done in the past. The game design snapped together very quickly: I had the initial idea, played a couple of games on a spreadsheet to get a feel for the idea, and made one change based on those plays. After that everything felt just right through multiple rounds of playtesting. Likewise the puzzle generation is nowhere near as elaborate as in my previous game, fairly simple methods worked well and provided good variety. Instead I ended up spending silly amounts of time on curating…
2024 · huewords.snellman.net
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Hey HN, About twenty years ago, while I was in college, I first stumbled upon James Propp's Self-Referential Aptitude Test [1] and absolutely loved it. Ever since then, I've had this idea of turning that concept into a daily game, and I've finally built it: https://www.logiquiz.com/ The game interface checks each question against the answers you've given, so it doesn't spoil anything by giving away the answers. There are five different tests each day, from very easy to very hard. I'd love to hear what you think! [1]: https://faculty.uml.edu/jpropp/srat-Q.txt
2025 · logiquiz.com
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I always thought it was cool when someone could make a plausible estimate from reasonable guesses. I recently learned that these are sometimes named after Enrico Fermi, the famous physicist, and its the same technique used to create his famous Fermi paradox. You build a rough logic chain using a few sliders and fixed quantities (e.g. weeks per year), and the goal is to get within an order of magnitude of the true answer. The math is simple; the thinking is the game. Would love feedback.
2025 · fermi-game.andrewnoble.me
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Psychology research is currently facing a crisis: A significant amount of published studies cannot be reliably reproduced. Yet these studies will still be used in news headlines, and treated as fact. Research into social media has not been immune to this either, with the problem exacerbated by study designs that don’t match the real world. We built the Misinformation Game to aid in this problem. Our tool allows researchers to design social-media studies that look and feel like social media, while also making sure that each participant has a similar experience. This is really important for…
2023 · misinfogame.com
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Some months ago @andrewrn tried to create a Wordle-style site for order-of-magnitude thinking. This was a wonderful idea, but the actual site was somewhat over-engineered and confusing. (https://news.ycombinator.com/item?id=43632278) In the past week, I looked at this idea again and built a very simple site which gives you a new Fermi estimation question every day: How many new cars were sold in the US in 2024?; How many humans have ever lived (including those currently alive)?; How many chickens are slaughtered for meat every year? To win, you need a guess within ±20% of the…
2025 · fermiquestions.org
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TruthRush ▲1TruthRush — Think Fast. Spot the Fake. Master the Truth. 🧠⚡
14d ago · truth-rush.vercel.app
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