Tchia has the ability of "soul jumping", which allows her to possess and assume control of animals and inanimate objects found in the world, and uses their power to travel to new areas, solve puzzles, and defend herself against opponents.

Through exploration, players will discover different points of interest, minigames, and chests with cosmetic items, meet other non-playable characters, and complete side quests.

Players can play "Soul-Melodies", which allows Tchia to perform feats such as summoning animals for soul jumping, altering the time of day, or changing the in-game weather.

On Tchia's twelfth birthday, an airship lands on the island and a man named Pwi Dua emerges, kidnapping Joxu.

Knowing he's sending people to abduct him too, Tre gives Tchia his boat so she can escape and rescue her father.

Tchia travels to the village of Hunahmi and meets their chief, who paints her face and teaches her how to carve totems.

She then travels to Weliwele, where she meets their matriarch Gaby and her daughter Louise, the latter of whom Tchia starts up a romantic relationship with.

There Kavere reveals that Tchia's father and missing mother were the king and queen of the islands and that they had a son and daughter with soul-jumping powers.

Tchia shuts down Meavora's fabric factories to try and save them, but Pwi Dua traps them and her father inside one and sets off a bomb, killing him, Gaby, and the Huahmi Chief.

Kavere gives them an artifact that can revert Meavora into his original form of a worm and Tchia and Heia go back to Ga Ngazo.

She uses the artifact to stop his heart and forces Meavora to vomit up all the consumed children before turning back into a worm, at which point Heia kills him.

The setting is fictional; it was heavily inspired by New Caledonia, a Pacific nation within the French Republic where the founders of Aweceb, Thierry Boura and Phil Crifo, grew up.

Most members of the studio travelled to Lifou for two weeks to conduct research, as well as showing a demo to the indigenous population.

As she slowly explores the world, she gradually meets different non-playable characters and helps resolve their conflicts, breaking down the wall between different communities.

[11] It was co-published by Kepler Interactive, a publishing label jointly operated by several independent game developers including Awaceb.

[33] NPR liked the protagonist's ability to possess creatures, feeling it gave the player freedom to experiment, "they make traversing the colorful and vibrant world a true joy".

[34] Edge enjoyed the protagonist's boat, writing that exploring the archipelago on it was a joy, "Some of Tchia's standout moments involve your catamaran, as you scud across shimmering waves toward the sunset or weave your way along twisting rivers".