The short answer
1 in 8 Billion is a free browser game at 1in8b.life. You are born as one of the babies born right now, in a country drawn by real births, and you live that one life to its end. Games like it are BitLife, CoreLife, Echoes, 100 Years, and AltLife. LifeSim is a different take: one life in a real city, with people who remember you.
What is 1 in 8 Billion?
1 in 8 Billion is a free life simulation in the browser, at 1in8b.life. In Korean it is 80억 분의 1, and in Japanese 80億分の1. It came out on October 5, 2026, and its makers say it is now in 18 languages.
You don't choose who you are. You are born as one of the babies born on Earth right now, and the place is drawn by the real number of births in 172 countries and territories. So a birth in India or Nigeria is far more likely than a birth in Korea or Germany. Then you live that one life to its end. Each year you pick a focus, and you make choices about school, work, love, moving, and health. The choices change the odds, but the statistics of the place you were born keep pulling.
A whole life takes about 30 minutes, an hour, or an hour and a half, as you choose. Its numbers come from public data, such as the UN World Population Prospects 2024 and the World Bank. There is no sign-up and no ads. Your lives stay in your browser.
A note before the list
We make LifeSim, and LifeSim is not a birth lottery. So most of this list is other people's games: life sims that also go from birth to the end, a year at a time. We put LifeSim last, as a different take, and we say where each game fits.
Games like 1 in 8 Billion, compared
| Game | Who you are at the start | Runs on | How you pay |
|---|---|---|---|
| 1 in 8 Billion | Born at random, by the real births of 172 countries and territories | Any browser | Free, no ads. An optional keepsake pass is $3 once. |
| BitLife | A random life, or one you set up | iPhone, Android | Free with ads. Bitizenship $9.99 once. |
| CoreLife | A random text life, year by year | Any browser | Free |
| Echoes | A text life from birth to death | Browser, on itch.io | Free, no ads |
| 100 Years - Life Simulator | A baby, in short 3D scenes | iPhone, Android | Free with ads and in-app purchases |
| AltLife – Life Simulator | A random text life, year by year | iPhone, Android | Free with ads and in-app purchases |
| LifeSim | Anyone you describe, in any real city | Any browser, iPhone | Free. No ads, nothing to buy. |
The games in short
1. BitLife
The best-known life sim of this kind, by Candywriter, on iPhone and Android. You start as a newborn with a random country and family, or set them up yourself, and tap Age to live a year at a time. Events pop up and you pick an answer. A life takes minutes, and the game is full of jokes. It is free with ads; Bitizenship is $9.99 once. Read 1 in 8 Billion vs BitLife vs LifeSim.
2. CoreLife
A free text life sim in the browser, at corelifesim.com, in the style of BitLife. Its home page promises no paywalls. Pick it if you liked playing in a browser tab with nothing to install.
3. Echoes
A free text life sim on itch.io that runs in the browser. It takes you from birth to death, with no ads and no purchases.
4. 100 Years - Life Simulator
A free 3D life sim for phones, from Voodoo. You play a life in short scenes, from baby to old age, and your choices decide how long you live. It has ads and in-app purchases.
5. AltLife – Life Simulator
A free text life sim for iPhone and Android that plays a year at a time, like BitLife. It has ads and in-app purchases, and one purchase removes the ads. Read AltLife, explained.
6. Just the draw: our birth lottery
If what you liked was the moment of birth, our free birth lottery draws a country by the same UN births and shows its odds, its life expectancy, and its numbers. Each country with a page on this site also has its chances of being born there.
A different take: LifeSim
1 in 8 Billion is about chance: where you are born shapes most of what follows, and a whole life goes by in about an hour. LifeSim is about the people around you. You choose who you are and any real city on a 3D map of Earth. The people there have names, homes, and jobs, they answer what you type in your own words, and they remember what you did. A day passes at a time, and the life lasts as long as you want.
It is free in the browser and on iPhone, with no ads. The game is in English for now.
Your first week in LifeSim
You pick a city. Any city, on a real map of Earth. You give your character a name and a reason to be there. Then you step out onto a real street, and there are people on it.
They’re not waiting for you. They have jobs to get to, homes to go back to, friends they see on Fridays. Say hi to one of them, in your own words, and they answer in theirs. Tell them something and they keep it. Tell their friend something and it gets around.
By the end of the week you have a place you go in the mornings, someone you’re avoiding, and someone you’re not. One player once stayed for thirteen hours straight. We checked.
LifeSim is a free game, in the browser and on iPhone. No ads and nothing to buy. Season 1 is in beta.
Which one should you play?
For the feeling that your life was given by chance, play 1 in 8 Billion itself, at 1in8b.life. For the same arc in minutes, with jokes, play BitLife. For a free text life in a browser tab, try CoreLife or Echoes. For one life that goes on, in a real city, with people who remember you, try LifeSim.
For more, read games like BitLife and life sims you can play in your browser.
Questions
What is 1 in 8 Billion?
A free life simulation in the browser, called 80억 분의 1 in Korean and 80億分の1 in Japanese. You are born at random, by the real births of 172 countries and territories, and live that life to its end. It came out on October 5, 2026.
Is 1 in 8 Billion free?
Yes. There is no sign-up and no ads. The one thing for sale is an optional keepsake pass, $3 once, which turns a finished life into keepsakes like a record book. Without it, the game works the same.
Which site is the real 1 in 8 Billion?
Its makers say the only official address is 1in8b.life. They name lookalike sites, such as 1in8b.app, 1in8b.net, and 1in8billion.app, as not theirs.
Is there a 1 in 8 Billion app?
Not in the app stores. Its site says you can add it to the home screen of your phone, and then it works like an app.
Is LifeSim like 1 in 8 Billion?
In part. Both are free in the browser. 1 in 8 Billion draws your birth and runs one whole life from statistics in about an hour. In LifeSim you choose who you are and a real city, and live day by day with people who remember what you did. 1 in 8 Billion vs BitLife vs LifeSim.