You arrive in San Francisco at the start of the AI wave as a random person. Twelve years. Real statistics decide the odds; every six months a situation lands that only you can decide. The companies are fictional; the numbers are not.
Four other people arrive the month you do, living by the same statistics on the same market. You see them at every milestone, and at the end.
Every six months a situation is written for your exact life: your employer, your partner, your bank balance, the last thing that happened. Each new year gets a review. The game's statistics still decide the odds and bound every effect.
Each run reshuffles which sectors win, and winners can flip. Rent is due monthly whether or not your paper equity is up. At the end, 450 reruns of your life put a number on how much was luck.
Every life is drawn from these distributions, then your choices and a seeded random number generator do the rest. Measured means a published statistic; estimate means the game interpolates between published figures. Gathered October 30, 2026.
500 lives played by a neutral autopilot that also takes the half-year decisions, twelve years each. Median net worth ~$580k; 37% end above $1M, 4% above $10M, 5% below zero. Tech workers: median $3.4M. 5% leave the country when a visa lapses; 2% leave the city broke; the autopilot marries 79% of the time when it wants a family. Across a strategy grid (cautious, moderate, aggressive, founder, and a cheat that knows the sector winners), no strategy wins more than ~65% of head-to-head lives on the same draw, and the cheat does not beat a moderate player. Founders have the highest mean and the lowest median, as in the Carta and Horsley Bridge data.
A model writes the situation and the options from your current state, but it only proposes effects from a fixed schema (cash, burnout, skill, network, relationship, job risk, offer odds, a few actions), each clamped to bounds the engine enforces, and risky options carry an explicit probability the engine rolls. No story decision can hand you a company, a windfall above two months of income, or a job. The calibration harness, which has no model, plays a handwritten deck under the same rules.
Hosted with the Node server in server/, this site holds the model key and writes the decisions for everyone. The browser only ever talks to this server; no key is typed into or stored in the page. Inside claude.ai the page cannot reach the network, so decisions come from Claude through the viewer's account. To use another OpenAI-compatible model, point the server's OPENAI_BASE_URL at it.
Same city, same market, same odds. Different draws.
Rerunning your life: the same you in other worlds, other people in your world, and other strategies in this exact life.
Every decision you made, replayed with the other choice and the same luck (plus four other draws), with your own strategy playing on. What you got right, what you left on the table, which choice would have made the better life, and which was the real coin flip.
A thirty-second vertical video of this life: who you were, the twelve-year line with milestones, the numbers, the luck split, what hindsight found, and a QR code so anyone can play this exact life. Rendered in your browser.