Surviving Mars - Below and Beyond DLC Steam Altergift

The era of colonization is over and a new age of exploration has begun. You've just scratched the surface of Mars, now get ready to go below and beyond! Features Back to the Bases - Expand your colony into caves and lava tubes under the surface. Players can use existing structures, or underground-specific buildings to build a base for exploration. Expand with caution, potential cave-ins can destroy everything. Mine Your Own Business - Players can now go below the surface and beyond the red pl...