The people of the destroyed planet Ra Ciela struggle to survive on the Soreil , a massive spaceship constructed by their distant ancestors. Their existence is threatened by mysterious beings called Sharl, which can use the Song Magic that was lost to humans long ago. In response, Soreil's people have split into two warring factions; the Genomirai Church seeks coexistence between the species, while the city of Felion believe they can only achieve peace by destroying the Sharl.
A group of people known as the Ancients has awakened, having lived through Ra Ciela's last days. They can still make use of Song Magic and may hold the key to resolving Soreil's conflicts. The player controls a party of two characters named Delta and Casty, initially, and will eventually switch to Ion and Earthes.
The gameplay involves turn-based battles where the male party member attacks enemies while shielding the female character as she charges up her magic. Other features include Genometrics, a visual novel-like segment that explores a character's subconscious mind, which can impact their interactions with other characters. During Purification Ceremonies, party members can equip crystals that enhance their fighting abilities.
The game Ar Nosurge: Ode to an Unborn Star was released on the Playstation 3 in 2014 and is a role-playing game (RPG). The player's choices and actions will shape the story, making each playthrough unique.