They're robots, so they're created by consciousness. A humn consciousness will probably create an alien-enough robot...
I will into being a collection of four bots:
- caverockcliffdewcollector or
I proclaim that I wish them to carry memories of what they see in a polygonal shape>cavebot collects water to give to dirt bot. He knows not why he does this, but he captures pictures of the outside of the cave and sees bats streaming into and out of the cave, a sheet of water periodically dripping down the cave mouth's roof during rain, and a vast expanse of foggy greenery in the valley below.
... and so on for all the other bots. Cavebot1 selects up to five memories to stretch and stuffs them into a pentagon. He meets up with dirtbot99 and provides water which allows minerals to become a solution dirtbot's nanobots can work into parts. Sandbot likes dry stuff and his nanobots can make more bots based on the pentagonal memories. Eventually retardbirdbot gets made but because cavebot failed to comprehend flying nobody interacts with retardbirdbot and it becomes drit to be recycled by sandbot.
By chance a pool forms from the periodically rains and waterbot does something. By chance, more efficient waterbots generator memories and intermingling with other bots yield hydromagnetodynamic drives. Retardbirdbot 2.0 is formed, but waterskipperbot, ever the archimedes, insinuates into some dirtbot's the pentagonal memes of HMD propulsion. Retardbot spergs out and flyes randomly in an embarrassing pantomime of his bot cousins, but he eventually spreads the colony. More cousin bots form and hook onto retardbot, but retardbot, having served his purpose, fucks off and is recycled by his cannibal nieces and nephews.
The meme of retardbirdbot goes extinct. The bots must evolve a novel method of preserving some cavebots' birb memories and some waterbots HMD memories.
Thousands of years later, humans discover the botworld & perceiv intelect