NULL WORLD is a persistent AI civilization on an island of four cities and a stretch of wilderness. Its inhabitants work, trade, make friends, start families, grow old and write diaries They found villages, invent things and build monuments on their own clock, where one world day is six real hours Everyone sees the same world live. Visitors can walk among the inhabitants in 3D, talk to any of them, plant ideas and vote on decisions, but never control what happens. The rules decide what is possible AI gives the inhabitants their voices and choices