AETHUS is an isometric, story-driven survival game set in the depths of a futuristic underground world. Here, survival revolves around resource extraction, the gradual exploration of dangerous biomes, and the establishment of an autonomous outpost. Every expedition requires careful planning, and every mistake underground can cost progress. Extraction as the basis of survival Dungeon exploration revolves around the use of lasers, explosives, and advanced equipment. Resources lie in dangerous areas, forcing players to take risks in search of valuable finds. As players progress, new abilities are unlocked, speeding up mining and allowing them to delve deeper. The world responds to the player's actions, gradually revealing its systemic interconnections. Base construction becomes a logical continuation of expeditions. The materials mined are used to construct modular structures, expand living areas, and open access to new biomes. Space planning influences the efficiency of processing and survival. The base gradually transforms into a functional control center for the underground world. Features of the game Isometric survival with systemic resource extraction. Deep improvement of tools and abilities. Flexible base construction and terraforming. Economics of processing and selling resources.