There is a world on Ethereum that has no definitive appearance.

It consists of twenty levels, 11,104 parcels, and landscapes that change with time. Its structure exists in code. No single image or three-dimensional model can fully represent it.

This world is the Hypercastle, the foundation of Terraforms, an artwork created by Mathcastles (113 and xaltgeist) in December 2021.

At first glance, Terraforms appears as a collection of animated compositions made from Unicode characters. Symbols shift, colors flow, and landscapes emerge from patterns of code. Each parcel is a distinct artwork, yet all belong to the same underlying world.

Terraforms treats computation as an artistic medium. Its landscapes, colors, symbols, and spatial relationships are generated by programs stored on Ethereum. The artwork exists as an executable system, capable of producing its own images rather than depending on a fixed set of files.

The code itself is part of the artwork. In 113's words, “The art is the contract and comes off the contract.”

Anyone can examine its structure, explore its rules, and create new ways of experiencing it. The artwork provides the architecture; its interpretations are left to those who explore it.

Time is written into Terraforms. Colors and symbols animate continuously, and landscapes shift from day to day. The artwork does not have one permanent visual state.

Human decisions become part of that evolution. Owners can preserve their parcels as generative landscapes or irreversibly transform them into canvases for their own creations, a mode called Daydream. These drawings, called Dreams, are recorded onchain, allowing each parcel to accumulate a history of human intervention.

Mathcastles even programmed the possibility of the Hypercastle's gradual collapse. Its survival depended on enough owners choosing to enter Daydream, and the fate of the artwork became a collective decision. The community reached the required thresholds, preventing decay under the existing rules.

Terraforms was built to be explored, interpreted, and extended. Its open architecture has inspired independent explorers, visualizations, drawing tools, and research. Collectors, developers, and artists continue to discover possibilities within a system whose original rules remain accessible to everyone.

The work also raises a question about permanence. Most digital worlds exist only as long as someone maintains them. Terraforms places its essential data and generative logic on Ethereum, with an architecture designed to reduce dependence on external infrastructure over time.

Its future cannot be guaranteed. But it was conceived on a timescale that extends far beyond the life of an ordinary digital product.

Terraforms is a world that can be owned in fragments, explored as a whole, transformed by its participants, and interpreted without permission.

Its code defines the boundaries.

What happens within them remains open.