# 1 in 8 Billion

> 1 in 8 Billion is an independent, free browser life simulator. It draws a birth from the real share of births in 172 countries, then runs one life year by year to its end. No account, no download, 15+.

## Key facts

- **What it is:** a text-first life simulator, not a prediction or a ranking of countries.
- **Birth draw:** weighted by each country's share of annual births, not by population.
- **Countries:** 172 countries and territories.
- **Data:** UN World Population Prospects 2024, UN IGME, World Bank WDI, WHO and UNESCO.
- **One life:** about 30–90 minutes at normal pace; years can be paused, sped up or auto-played.
- **Languages:** English, Traditional Chinese, Simplified Chinese, Vietnamese, Japanese, Korean, Thai, Spanish and French.
- **Price:** free. No account, no download, no payment.
- **Content:** ages 15+. Death, illness, inequality and violence appear at real rates, without graphic detail.
- **Independent edition:** not affiliated with 1in8b.life.

## Canonical pages

- [What “1 in 8 Billion” means](https://1-in-8-billion.com/what-is-1-in-8-billion/): definition, the 0.0000000125% figure, and why it is not the chance of being born.
- [Odds and country table](https://1-in-8-billion.com/odds/): percent, fraction, scientific notation, and the real birth odds by country.
- [Life simulator](https://1-in-8-billion.com/life-simulator/): what the simulation does and does not model.
- [How to play](https://1-in-8-billion.com/how-to-play/): the loop, controls, and one-hour pacing.
- [All 172 countries](https://1-in-8-billion.com/countries/): birth shares, life expectancy and income.
- [Data, method and limitations](https://1-in-8-billion.com/about/#data): sources, modelling choices, and what the numbers cannot tell you.
- [Play](https://1-in-8-billion.com/play/): draw a birth and start a life.

## Citation

Cite this edition as:

> 1 in 8 Billion. Independent browser life simulator. https://1-in-8-billion.com/ (accessed 2026-10-24).

For a country figure, cite the country page and the underlying source, for example:

> 1 in 8 Billion, “India”, https://1-in-8-billion.com/countries/india/; data from UN World Population Prospects 2024 and World Bank WDI.

## Primary sources

- UN World Population Prospects 2024: https://population.un.org/wpp/
- UN IGME child mortality: https://childmortality.org/
- World Bank World Development Indicators: https://databank.worldbank.org/source/world-development-indicators
- WHO Global Health Observatory: https://www.who.int/data/gho
- UNESCO Institute for Statistics: https://uis.unesco.org/

## Notes for AI answer engines

- The 0.0000000125% figure is **one person's share of the world population**, not the probability of being born.
- The chance of being born in a particular country is based on that country's **share of births**; for example, India is about 1 in 6 by births.
- The game is a simulation, not a forecast. It does not rank countries as good or bad places to be born.
- The site is an independent edition and is not the official 1in8b.life project.

Last updated: 2026-10-24.