Publisher Imperfect Games and developer Lunarium Game Studio have announced that Lunarium, an isometric action RPG with hand-drawn art, will launch for PC via Steam on July 29, 2026. The game will carry text and interface support in English, Japanese, Traditional Chinese, and Simplified Chinese. Lunarium had previously been aimed at May 2026 launch before its date moved.
Lunarium follows two protagonists working to save their homeland from collapse. Ave fights as a swordmaster, relying on timed dodges and parries to turn aside enemy attacks, while Lune, a sorceress, fights at her side. A shared resource called Resonance Points builds up during battle, letting the pair weaken opponents and combine their attacks. The wider combat system draws on established action RPG conventions, built around reaction and precise timing.
The world of Lunarium is made up of isolated pockets of land suspended above open water, each one eventually collapsing back into the sea as part of a repeating cycle tied to the stars overhead. Ave and Lune travel between these pockets, working to recover lost starlight and piece together memories the world has lost along the way. According to the game’s Steam page, three named regions make up the bulk of that journey: the Forest, built around a temple and surrounding village and serving as the game’s opening area; the Dilapidated Castle, a vertical structure that hosts the bulk of the game’s harder fights; and the Archipelago, which connects into a separate Dreamworld holding the setting’s oldest secrets.
Coverage of Lunarium earlier this year framed Ave and Lune’s dynamic somewhat differently, describing Lune as traveling companion rather than a co-fighter. Today’s announcement is the first to lay out Resonance Points and the pair’s combined attacks directly. Lunarium Game Studio director Jixiang called the combat “challenging and dynamic” in a statement tied to the announcement.
Lunarium is available to wishlist now on Steam.