

The game was developed by Image & Form, the studio behind the SteamWorld series. They put an end to the systems creating the gunk and after saying goodbye to Hari, return to populated space, trying to determine what story they will tell local authorities. With support from Beck and Hari, Rani is able to defeat the Gardener. With Hari's guidance, Rani finds a way back into the Garden. In a wasteland of the planet, Rani finds her mask broken and her health starts to wane from exposure to the gunk, but she is rescued by Beck and Hari, Beck having a change of heart and realizing she was wrong at pushing away Rani, having put her concern about their financial state and losing their ship over their friendship. When she first arrives at the Garden, the Gardener identifies Rani as a human and accuses her kind of also being destructive to planets across the galaxy, and ousts her from the Garden. Beck argues with Rani's decision to head towards the Garden to try to put an end to the gunk, and soon stops talking to her, leaving Rani on her own. The alien, named Hari, explains that they had lived in harmony with the planet for centuries, but when an entity called the Gardener arrived, he had caused the gunk to appear and forced the aliens from the planet. She finds one of the aliens kept alive in a pod and frees him. 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.
