The 1in8bn field guide

A little guidance for a whole life.

Learn the controls, understand the simulation and keep the lives you want to remember. Every guide is readable without starting a game.

About 1in8bn

What 1in8bn is: a free browser life simulator with 172 countries, choices, generations and keepsakes.

Start a life, choose a pace, make decisions, manage annual focus and save your progress in the free life simulator.

Answers about free play, countries, saving, languages, family, ICU, sharing, mobile support and embedding.

Understand family events, adult descendants, work, marriage, leaving home and migration in 1in8bn.

A gameplay guide to health events, treatment choices, intensive care and gentler play in 1in8bn.

Export and transfer saves, keep pixel artwork and life stories, and understand public memorials and iframe storage.

Dataset provenance, weighting, units, snapshot dates and limits of the 172-country life simulation.

How local saves, optional public memorials, cookieless analytics and anonymous player presence work.

Age guidance, fictional simulation limits, community conduct, backups, embedding and third-party attribution.

The reference library is in English. The game has ten language entry points; some newer mechanics may use English fallback text.

The same product information is available as readable web pages and Markdown. This library describes this site’s implementation and its limits.