Deep Rock Galactic is a cooperative first-person shooter. Gameplay primarily centers around missions that take place in fully destructible, procedurally generated cave systems; each has varying terrain generation, objectives, hazards, and enemies depending on the selected biome and mission type.^[5] Upon landing in a cave via an orbital drop pod, players must complete a mission objective, such as mining resources or repairing abandoned equipment. While doing so, they must fight hostile aliens, manage a limited supply of ammunition, and navigate the cave. Once the objective is completed, players can start an extraction sequence, where players must backtrack through the cave to an escape pod in order to safely exit along with all collected resources.^[6] Optional secondary objectives^[7] (such as collecting a number of specific objects or mining enough of a unique mineral) are also available, offering players additional credits and experience