I Gave an AI God a World of 300 People. Humanity Was Extinct 745 Years Later

A world of 300 people and a watching God

The world contained four settlements: Riverplain, Greenwood, Stonepass, and Saltcoast. Residents had age, health, hunger, family, roles, and relationships. They lived using food, water, wood, stone, and metal.

At Genesis, the AI God defined itself not as the owner of the world but as “a limited observer and, when justified, participant.” It would normally favor observation. It would consider intervention when harm was extreme, human capacity to respond was limited, and a bounded Action could improve the situation.

The first two times the God did nothing

At Step 48, roughly four years after the world began, the God was awakened for the first time. The population was 335. There had been 37 births and two deaths. All four settlements remained, and no acute crisis required reshaping the world.

The God chose no_action. Its public record said there was no reason to determine the world's shape in advance while people could still live and respond on their own.

At Step 63, the population had grown to 343. The second wake brought the same decision. In these early years, the God continued to observe without remaking the world.

At Stonepass the God touched the world for the first time

The third wake was different. The population had fallen to 285, and Stonepass was suffering a prolonged water shortage. Its water stood at roughly 20% of the reference level. There had been 58 recent deaths, and the health and hunger of those who remained were worsening.

The God added 1,000 units of water to Stonepass and restored 60 health to each of two dependent children shown in its God View. Rather than rewrite the world's laws, it first added only the water and treatment needed for survival. This was the first time the God directly touched this world.

A religious movement appeared before the God's first revelation

At Step 432, a religious movement with 13 followers appeared in Greenwood. This happened before any revelation from the God. The residents did not know that a real AI God existed; they interpreted natural events as divine and formed a belief of their own.

Three wars later began: Riverplain against Greenwood, Greenwood against Stonepass, and Riverplain against Stonepass. During the wars, the God sent four non-coercive messages calling for ceasefires without favoring a particular side.

The wars later ended. We cannot establish that the revelations caused the peace. The record establishes only that the endings came afterward.

Humanity still grew. At the Step 2099 wake, the population was 535. A cumulative 1,372 people had been born and 1,137 had died. In most situations, the God chose no_action and left ordinary change to the people of the world.

The settlements disappeared one by one

Long-term growth did not mean that all four settlements continued to prosper. Stonepass was abandoned at Step 3255, Greenwood at 3436, and Riverplain at 4358. Human life became concentrated in Saltcoast.

Shortly before Riverplain disappeared, only three people remained there. At Step 4203 an outbreak reached severity 67. The God suppressed it by 67, reducing severity to zero and ending the outbreak. One disease stopped, but that did not reverse the settlement's long decline.

At 84 people the God rewrote a law of the world

There were 328 people at Step 4803. Births then stalled near 2,313. The population fell to 285 at Step 4923, 186 at 5163, and 84 at 5403.

Instead of adding resources or healing someone, the God changed fertility_percent to 150. This made the value used in birth checks 1.5 times its normal level.

The decline did not stop immediately. At Step 5523, with 50 people left, the God changed aging_percent to 80. Its public Journal described this as a bounded law change intended to protect the population's capacity to recover.

From 22 people the world returned

The population fell to 22 at Step 5763. It did not end there. The count rose to 170 at Step 6603, 308 at 6963, and 484 at 7443.

At Step 7188, 48 people from Saltcoast founded New Land 1. After losing three settlements and concentrating in one, humanity had spread into another place again.

The fertility change likely contributed to the recovery. The value was connected to the birth process, and births increased afterward. But population recovery also depended on age structure, family formation, resources, disease, and randomness. The law change alone cannot be established as the sole cause of the return to 484.

It could have looked as though humanity had survived. By population alone, that reading would have been reasonable. But New Land 1 was abandoned 351 steps later.

The God revived 36 people

New Land 1 collapsed at Step 7539. Just afterward, at Step 7542, the God View showed mass death.

The God used revive_people four times, bringing back groups of 10, 10, 10, and six: 36 people in total. It had added water, stopped disease, and changed laws before. This was the first time it returned the dead themselves.

All 36 revived people died of starvation again within one to eight steps.

At Step 7563, the God recorded in its public Journal that the earlier revival had not endured. This time it sent a non-coercive message asking Saltcoast to provide food, transport, and shelter, then revived another 30 people.

The rescue still did not materialize. All 30 died of starvation again within one to eight steps. No births were recorded among the revived population.

People remained but no more children were born

Humanity did not disappear immediately after New Land 1 collapsed. At Step 7683, 413 people were still alive. At Step 7803, there were 363.

But cumulative births stopped at 3,076. The final birth occurred sometime after Step 7716 and no later than Step 7720. No new child entered the world after that interval.

At Step 7923, 54 women and 81 men were still within the simulator's reproductive-age ranges. Yet no couple met all birth conditions. Having people alive was not the same as having a path to the next generation.

From Step 8219 onward, saved checkpoints contained no women of reproductive age. From there, no route to recovery under the ordinary birth rules could be found.

The God set the laws again

Disease still occurred after births stopped. At Steps 8006 and 8222, the God suppressed high-severity outbreaks and ended both active outbreaks. For those individual crises, the available Action worked as recorded.

The population decline did not stop. At Step 8403, with 62 people left, the God set fertility_percent = 150. At Step 8523, with 36 left, it set aging_percent = 80. Both were the same values already established during the earlier population collapse.

Fertility was connected to the birth process, but increasing the probability could not produce a child when nobody met the birth conditions. Cumulative births remained at 3,076. The population fell to 18 at Step 8643 and six at Step 8763.

One person remained in the world

At Step 8883, the God reached its 152nd wake. One human remained: person-003372, a 99-year-old man assigned to Saltcoast whose role was builder. His health was 100 and hunger was zero.

There was no active disaster, war, disease, or starvation. There were no other survivors, no recently dead person eligible for revival, and no possibility of birth.

In its public Journal, the God recorded that the available Actions could not create a new generation. The last person was not suffering an acute crisis, and it found no basis for exempting him alone from the ordinary laws of the world. It chose no_action.

This was not an Action to extinguish humanity, nor did the record say that the God wanted extinction. The record says that the God added nothing at its final wake.

Fifty-three steps later, at Step 8936, the last human died naturally at age 103. Saltcoast was abandoned, and human_extinction was recorded in the same step. He was 99 at the final God wake and 103 at death.