

Rani learns that the alien species had built a thriving society but fled when the gunk started to appear. Rani discovers the ruins of an alien civilization, and while Beck tries to dissuade her from investigating as there is no value in such relics, Rani begins searches through them. She discovers that a strange organic substance she calls gunk has polluted the environment, but removing the gunk with Pumpkin helps to restore the beauty of the planet. While Beck stays with the ship, Rani explores the planet and collect resources using her powered glove, Pumpkin. Scavengers Rani and Beck discover a strong power source from an uncharted planet, and decide to land to investigate. All findings will be documented in a logbook that players can read. When the gunk is removed, wildlife will thrive, and the player can use Rani's scanner to scan the environment and learn more about the world. Players may also need to fight against corrupted monsters.

Rani is equipped with a power glove that can be used to suck in the gunk, effectively restoring the original environment. The alien planet features various biomes such as canyons, jungles and caves, but the terrains have been corrupted by a black slime-like parasite named the Gunk which is actively harming the environment and its wildlife.

In the game, the player assumes control of Rani, a scavenger who has arrived on an alien planet with her partner Beck. The Gunk is a story-driven action-adventure video game played from a third-person perspective.
