Life & fun · alternatives · 2026
24 alternatives to If the Universe is Teeming With Aliens... Where is Everybody?
75 solutions to the Fermi Paradox + the problem of ET life
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. If the Universe is Teeming With Aliens... Where is Everybody? launched in 2016; newer entries below may have overtaken it.
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The universe is weird. Existential short stories by Exurb1A
2016 · its alternatives →
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- 4FA
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 →
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- 6WS
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 →
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Life and work of two of our most eminent physicists
2017 · its alternatives →
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An incredible journey from outer space… back home.
2015 · its alternatives →
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The astounding interconnectedness of the universe
2016 · its alternatives →
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How Magnets Work▲126You've always wondered, haven't you? (a Hardbound story)
2016 · its alternatives →
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An attempt to live life as if global society collapsed
2015 · its alternatives →
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From the Big Bang to Belly-Button Fluff
2016 · its alternatives →
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Are we all waiting for the red pill?
2016 · its alternatives →
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Swipe decision game, explore, and conquer the galaxy
2024 · play.google.com · its alternatives →
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Something massive is coming... And it's heading for Earth.
2016 · 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 →