A Stellaris player discovered a planet with a stone age population and robots right in the starting star system

Procedural generation loves throwing out surprises that no scriptwriter would come up with. Sometimes it's a rare anomaly or a lucky neighbor, and sometimes it's pure chaos, like a planet of savages with stone axes that also happens to be full of robots. And not as the result of some catastrophe, but from day one of the campaign.

That's what happened in Stellaris, the space strategy game from Paradox Interactive. One player was scouting the area around the starting system and stumbled on a continental world with a primitive Stone Age civilization and a population of 2200 pops. The planet looked like a perfect target for early enslavement, until robots turned up among the inhabitants.

The big number, by the way, isn't an anomaly. After the 4.0 "Phoenix" update released in May 2025, Paradox moved population to a group-based system and multiplied the usual values by a hundred, so 2200 works out to roughly 22 "old" pops.

The most plausible explanation is mechanical. Since the First Contact DLC, pre-FTL civilizations have been split into technological eras, from the Stone Age to the early space age, and can roll special origins during generation, just like full-fledged empires. This planet seems to have landed the Mechanist origin, which gives starting robot workers, and the game never checked whether that fits with stone tools. Similar mismatches have happened before. One player recalled a pre-FTL Lost Colony that inherited a trait from a Clone Army empire that makes the species die out without ancient clone vats, but never got the vats themselves, so the poor souls had to be saved through the console.

Lore explanations, naturally, piled up too. The most obvious one goes like this: an advanced civilization survived an asteroid impact or a nuclear war, slid back into the Stone Age, and the robots remain as a legacy of ancestors that nobody knows how to build or repair anymore. It instantly brings to mind Horizon Zero Dawn, with its tribes hunting mechanical beasts among the ruins of the old world. Except the campaign has only just begun, and no catastrophe had time to happen. That leaves a simpler option.

Stone Golem. Sorcery is still prevalent at this age.

The future of such a planet can play out in different ways, too. Players who have run into similar worlds describe two scenarios. Either the civilization reaches the space age and becomes a regular empire, or the robots stage a machine uprising and wipe their organic creators off the face of the planet.

One commenter suggested that the culture shock mechanic after integrating pre-FTL species should depend on the era, since hunter-gatherers living in trees have a much harder time joining galactic society than inhabitants of an early space age world. Though it's unclear who would be more shocked, the savages or their mechanical neighbors.

The cavemen haven't invented the wheel yet, but they already have robots.