Techtonica
Techtonica is a first-person factory building game set beneath the surface of an alien planet. Work alone or in co-op to build factories, gather resources, research new technologies, mold the destructible terrain, establish a base of operations, and uncover long-forgotten secrets. Source: IGDB
Techtonica Gallery
Techtonica Feed
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Tootle around Techtonica's demo, an upcoming underground automate 'em up
Yes please to Satisfactory but underground