Moonstone Island

Lore & Background

The game is set in a world where the legendary Old Kingdom, where humans and spirits once coexisted in harmony, was destroyed by a Cataclysm. This apocalyptic event opened interdimensional gates known as Rifts, allowing the corrupting force called The Creeping Dark to slowly spread across the land, draining all life in its path. The player must seal the Rift closest to Moonstone Island to halt this encroaching threat. The protagonist explores ancient dungeons and temples—the last surviving structures from before the Cataclysm—as part of their quest to become a world-renowned alchemist, a mediator who bridges the conflicted human and spirit worlds by teaching harmonious coexistence with nature.

Reader's Guide

Moonstone Island is notable for its distinctive hybrid of life simulation, monster-taming, and deck-building mechanics, drawing inspiration from classic video games such as Pokémon, The Legend of Zelda, and Harvest Moon, as well as films by Studio Ghibli and deck-building games like Dominion and Slay the Spire. The game emphasizes nonlinear gameplay, encouraging players to participate in activities beyond the main storyline, including taming Spirits, constructing decks for turn-based battles, gathering resources, crafting items, and developing relationships with NPCs, including romance options. Following its release, the game received continued developer support through periodic free updates that expanded content with new Spirits, craftable items, seasonal events, and quality-of-life improvements. As of July 2025, eight major updates had introduced 27 new Spirits to the base roster of 66, along with 30 evolutionary paths. The game also features crossover characters from several notable indie titles added through post-launch updates, including Terraria, Ooblets, Cassette Beasts, Slay the Spire, Coromon, and Dome-King Cabbage. Studio Supersoft's paid DLC model offers exclusively cosmetic craftable items, with all gameplay-altering content released through free updates.

Did You Know?

• The game was conceived by developer Sandy Spink as a solo project using the Construct game engine before expanding into a collaborative effort.
• A physical edition for Nintendo Switch was given a limited release by Super Rare Games on November 13, 2025, in both standard and deluxe editions.
• The game launched on iOS and Android via Crunchyroll's Games Vault for Mega Fan or Ultimate Fan subscribers on November 7, 2024.
• Eight thematic DLC packs have been released as of July 2025, all offering exclusively cosmetic craftable items.