Aquatico

Aquatico is an underwater survival city-builder. The surface of the Earth is a barren wasteland, so humanity moves to the ocean floor to start over. You construct a base across multiple levels to escape the dying world. You build core infrastructure and production facilities on the seabed, while domed layers house your population. You manage these levels, gather resources, and secure temperature readings while exploring diverse biomes.

You unlock buildings and technologies using a research tree, including oxygen extractors, defense grids, and sushi houses. You utilize submarines and drones to oversee expeditions for rare resources. You must be careful with natural sea life, as harvesting and building can provoke sharks and whales. Your choices in the research tree determine the specific city you build.