Alterverse Orbs adds big, spherical planet blocks for each of the planets in the original "Alterverse" concept art from Hytale.

Each of the planet blocks

The original concept art, versus the same image but with the planet models overlaid.

Obtaining in Adventure Mode

Alterverse orbs can be crafted in the miscellaneous category of the furniture workbench, once 50 memories have been restored to The Heart of Orbis