Life & fun · alternatives · 2026
24 alternatives to Fermi Chain
A Wordle-style game for building estimation skills
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1FA
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 · its alternatives →
- 2WS
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 · its alternatives →
- 3
Hello, HN! Figure is a little side project I’ve been working on. Someone described it as Bejeweled meets Wordle. I built the puzzle interface and website in Next.js and React, which was a first for me and overall a great learning experience. The daily puzzle data is queued up in a PostgreSQL table. Another table stores anonymous solve stats. Once a day, a cron job hits a serverless API that promotes the next puzzle as “live” and prompts Next.js to update the prebaked static site with the new data. The game state is managed with Redux and your stats are persisted to localStorage. Framer…
2022 · figure.game · its alternatives →
- 4
An educational puzzle game. Solve a series of tasks where you build increasingly powerful components. Starts with the simplest logical components and ends up with a programmable computer.
2018 · nandgame.com · its alternatives →
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Mobile ZK Puzzle Game with NFT rewards. Contribute to nalinbhardwaj/wordlines development by creating an account on GitHub.
2022 · github.com · its alternatives →
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- 11
Countle▲152Countle is a daily puzzle game, a la Wordle, where you use 6 given numbers to produce of a sequence of calculations to reach a target number. In other words, it's a daily round of the "Numbers Game" from the British game show Countdown. Sample numbers round: https://www.youtube.com/watch?v=pfa3MHLLSWI A new puzzle appears every day!
2022 · countle.org · its alternatives →
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- 13AY
Test your estimation skills with a simple quiz
Oct 2025 · estimator.dylancastillo.co · its alternatives →
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Playing Lean▲104A board game that teaches the Lean Startup Methodology
2015 · playinglean.com · its alternatives →
- 15GA
Hi everyone! Graphs is the intersection of data visualization and the daily web puzzle genre (Wordle, NYT Mini Crossword, Connections, etc.). Every day, you are given a nameless graph and 5 options to select the right dataset it is representing. Upon winning, you can access the underlying dataset and other info + maintain a streak and stats. It's super simple - check out today's chart and you should be able to get the gist quickly. My email + twitter account (@graphsgame) is on the page, would love a feedback or a follow. Don't hesitate to reach out!
2024 · graphs.world · its alternatives →
- 16AG
A daily visual guessing game drawn from this day in Wikipedia history.
2022 · doodleai.darraghoriordan.com · its alternatives →
- 17
AI-powered daily English learning game like Wordle
2023 · apps.apple.com · its alternatives →
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2025 · playletterlinks.com · its alternatives →
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A Wordle-like game where you have to guess the unsigned 8-bit binary number!
2022 · jamesl.me · its alternatives →
- 21
Hi HN, I made this small game in my spare time. It's quite addictive, I spent a lot of hours playing instead of polishing it. My own highscore is 96,792. Source code is at https://github.com/MikeBellika/tile-game. It's made with react, tailwind, and framer motion. Hope you enjoy!
2024 · bellika.dk · its alternatives →
- 22
I’m a game show nerd who wanted to build a game, despite not being a developer. Using ChatGPT, I created Feudle – a blend of Family Feud and Wordle. Each day, there’s a survey question, and players try to guess the most popular responses—but the twist is that today’s answers come from real players who played yesterday. After playing, you can vote on or submit new questions, shaping future Feudles. If I were to start again, I’d explore newer AI-assisted coding tools like Cursor, but overall, this was a great learning experience. Hopefully, this inspires others to experiment with AI tools to…
2025 · feudlegame.com · its alternatives →
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Generate accurate project estimates instantly with AI
2024 · getestimate.ai · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →