A turtleverse is a type of high-complexity archverse comprising only verses that have sufficient computational capacity to hold turtles, or equivalent structures. Each turtleverse is made up of other turtleverses; it's turtleverses all the way down. Because of the requirement that each turtleverse contains a turtle, this can lead to strange consequences on marginal turtleverses, such as planets resting on the back of large turtles and Boltzmann turtles existing in an otherwise unpredictable void.