Substructure is a strategic construction and automation simulator set on a wandering planet within the Solar System. An unknown interplanetary object arouses both anxiety and insatiable curiosity: does it pose a threat or conceal breakthrough discoveries? An expedition lands on the surface and begins constructing factories amid the green plains of the alien world. Factories under foreign skies Production begins with simple installations but quickly develops into complex resource processing chains. Rare materials are hidden underground, and bizarre caves become sites for infrastructure expansion. You can operate alone or team up with other players, expanding your network of enterprises and paving the way to the planet's deepest layers. Agriculture plays a key role: from hand-planted crops powering the first generators to large-scale automated megafarms powered by drones. The balance between fields and industrial complexes determines the base's sustainability. As one moves deeper into the core, new technologies and more complex production systems emerge, allowing for the extraction of atmospheric elements and the assembly of advanced logistics modules. Features of the game Automation and branched production chains. Exploration of the planet's interior and the path to its core. Integration of agriculture into the industrial system. Cooperative mode for joint base development.