Glass

Glass is a refined building material produced from Sand in the Glass Forge, where 100 kg of Sand becomes 25 kg of Molten Glass. It is an endgame construction material with several specialized uses, especially for light-producing and transparent buildings. Sand can also be melted by dropping it into a Metal Volcano’s molten metal, and the Metal Refinery can be used to create the extreme temperatures needed to do this. In the Spaced Out! expansion, Glass can also be obtained from renewable space points of interest through rocket missions.

Glass is required for a number of important late-game buildings. It is used to build the Solar Panel, Monument Top, Sun Lamp, and Pixel Pack, and it is also one of the material choices for the Window Tile and Aero Pot. These uses make it especially valuable wherever transparency, light transmission, or advanced decorative construction is needed.

Because of its role in transparent and light-related buildings, Glass is often saved for infrastructure that cannot easily be substituted. The Solar Panel and Sun Lamp especially benefit from access to Glass, since both are part of power and lighting systems that support base expansion. The Monument Top also consumes a large amount of Glass, making it a significant material sink when constructing the Monument. Window Tile and Aero Pot can be built from Glass as a transparent option, allowing players to combine function with visibility or aesthetic design.

Practical points:

• Glass is produced from Sand, not from an ore or metal refinement chain.
• The Glass Forge yields Molten Glass, so the material is handled in liquid form before becoming solid Glass.
• Sand melts at 1712.85 °C, which is why very hot industrial processes are required.
• Dropping Sand into a Metal Volcano’s molten metal can convert it into Glass.
• It can be harvested on rocket missions from Space Debris in renewable space POIs.

Glass is therefore both a manufacturing product and a strategic construction resource. Its production requires high-temperature infrastructure, but the material unlocks several highly useful buildings that are difficult or impossible to replace with more common resources.