A free monster-taming action RPG by Netmarble Monster built in Unreal Engine 5, featuring real-time three-character tag combat and Monsterling ring collection across PC and mobile.
MONGIL: STAR DIVE is a free monster-taming action RPG developed by Netmarble Monster, a subsidiary of Netmarble that has been building the project for five years with a team of around 125 in-house staff. The game launched globally on April 15, 2026 for Android, iOS, and PC via the Epic Games Store and Netmarble's own launcher, with PlayStation 5 and Xbox Series X|S versions planned for a later date.
Built on Unreal Engine 5, the game delivers real-time three-character tag combat, a creature collection system tied directly to equipment, and a story that follows two young adventurers and their companion Nyanners across the world of Belana. It is a spiritual reboot of Netmarble Monster's 2014 title Monster Taming (localised as Creature Academy), sharing its core concept while significantly deepening the narrative and visual quality.
MONGIL: STAR DIVE targets players who want a high-production action RPG with a light-hearted tone, accessible combat, and a satisfying creature collection loop, without the open-world complexity of titles like Genshin Impact.
The game is set in Belana, a fantasy world described as home to the imprint of legends and mysteries. Belana is populated by humans, monsters, elves, and beastkin, and its geography spans diverse regions built to reflect different cultural inspirations. The world begins in a medieval Western fantasy setting and expands into forests, deserts, Korean-inspired areas, and eventually cyberpunk zones as the story progresses.
The variety of regional aesthetics is intentional. Each area introduces new environmental themes, native creatures, and story content tied to the local culture and lore of that part of Belana. This keeps the world feeling fresh across the full length of the narrative campaign rather than repeating a single visual language from start to finish.
The world of Hananis, a European-inspired fantasy land filled with forests, mountains, and cobblestone villages, is among the early areas players explore. It sets the tone for the game's mix of charm and fantasy world-building before the setting expands in later chapters.
The story follows two protagonists, Cloud and Verna, as they undertake guild missions and uncover their intertwined destinies. Cloud possesses a special ability to communicate with monsters and is haunted by mysterious dreams featuring a nine-tailed fox girl. His backstory drives much of the game's central mystery as players progress through the main campaign.
Verna accompanies Cloud with her own distinct backstory and combat role. Each protagonist has individual character storylines that explore their backgrounds separately from the main narrative, giving players reasons to engage with both characters beyond their roles in combat.
Nyanners is the companion cat spirit who serves a unique mechanical purpose in the game. Rather than simply being a mascot, Nyanners is the core of the Monsterling system: when players encounter wild monsters in the world, it is Nyanners who uses special taming abilities to absorb their essence and transform them into wearable rings.
Combat in MONGIL: STAR DIVE is built around a three-character party that players manage simultaneously. Switching between characters during a fight leaves the others active on the field rather than benching them, meaning all three party members contribute to the battle at the same time rather than taking turns.
Each character has unique action patterns and a distinct playstyle shaped by their role. Fighters specialise in melee brawling and apply damage that scales with Combativeness mastery. Destroyers are built for boss encounters, dealing neutralisation damage that can stagger and break enemy defences. Support characters apply buffs to allies and debuffs to enemies while keeping the party's health stable through the encounter.
Tag Skills activate when switching characters mid-combat, unleashing chain attacks that reward active and responsive play. The elemental system adds another layer, as matching elements between active characters and equipped Monsterling rings can trigger resonance effects that enhance damage or apply status conditions.
Monsterlings are the defining mechanic of MONGIL: STAR DIVE. When players encounter wild monsters throughout Belana, Nyanners can tame them by absorbing their essence and transforming them into Monster-rings, wearable accessories that each character can equip. Every Monsterling ring has its own elemental attribute and a set of effects it applies to the character wearing it.
Monster-rings serve two functions simultaneously: they increase the wearer's stats directly, and if the ring's elemental attribute matches the character's own element, they can unlock new passive skills or special support effects. Building a set of rings that resonates with your party composition is one of the primary ways to strengthen your team beyond levelling and gear upgrades.
The Monster Codex tracks every creature you have encountered and tamed. Completing the codex is a long-term collection goal that gives players a reason to explore every region of Belana and seek out creatures they have not yet captured. Codex completion rewards provide additional benefits on top of the rings themselves.
Monster-rings can be evolved to increase their base stats and unlock higher tiers of the passive effects they grant. Evolution requires specific materials gathered from field combat and dungeon content, creating a natural progression path that keeps ring strengthening tied to active play rather than purely to in-app purchases.
The synthesis system allows players to combine rings and materials to produce higher-grade Monsterlings or to craft rings with specific elemental attributes. This gives dedicated players a way to target the exact ring types they need for their build without relying entirely on random taming encounters in the field.
Character progression runs alongside ring development through a skill enhancement system that upgrades individual combat abilities. Each skill has enhancement tiers that increase its effectiveness and can add secondary effects, giving players meaningful upgrade decisions throughout the progression curve.
MONGIL: STAR DIVE is described by its developer as narrative-driven, a deliberate response to what was considered the weakest aspect of the original Monster Taming title. The main storyline follows Cloud and Verna across the regions of Belana with full cinematic presentation powered by Unreal Engine 5, including cutscenes and voiced character interactions.
Each of the playable characters has individual storylines that run separately from the main campaign, exploring who they are beyond their role in the central conflict. These side stories add context to party members that players encounter and unlock throughout the game.
MONGIL: STAR DIVE is free to download and play on all platforms with no base purchase required. Netmarble Monster has stated that the gacha system is intentionally designed to be lenient, with the developer's own words being that "gacha shouldn't be a showstopper" for players engaging with the main story and content.
The game can be played through its narrative content and progression systems without purchasing anything. Premium currency purchases are available for cosmetic items, additional character pulls, and convenience upgrades, but the core combat and story experience is not gated behind monetisation.
Most monster-collector games keep creatures as separate battle units distinct from your character build. MONGIL: STAR DIVE takes a different approach by turning tamed creatures directly into wearable equipment. Your monster collection does not sit in a separate roster but integrates into every fight as rings that modify stats, activate skills, and resonate with elemental combinations across your party.
The three-character tag system where all party members stay active simultaneously also separates it from similar mobile action RPGs like Tales of Wind or Crystal of Atlan, where the active character is the primary focus. In MONGIL: STAR DIVE, your off-field characters contribute continuously, making party composition and ring loadouts across all three characters equally important.
The developer explicitly positions the game as a more accessible alternative to open-world action RPGs, targeting players who want a focused story-driven experience with deep collection mechanics rather than the time investment that expansive open-world titles require.
The minimum requirements demand DirectX 12 and Windows 11, which rules out older Windows 10 systems. The 50 GB storage requirement reflects the Unreal Engine 5 build. Players on mobile can download from the Google Play Store or Apple App Store with no additional hardware requirements beyond a mid-range 2020 or newer device.
MONGIL: STAR DIVE launched on April 15, 2026 for Android, iOS, and PC. The PC version is available through the Epic Games Store and the official Netmarble Launcher at stardive.netmarble.com. PlayStation 5 and Xbox Series X|S versions are planned for release at a later date.
Yes. The game is free to download and play on all platforms. Netmarble Monster has stated that the gacha mechanics are intentionally lenient and that players can experience the full narrative and core gameplay without making any purchases.
Monsterlings are monsters that Nyanners, your companion cat spirit, tames and transforms into Monster-rings: wearable accessories for your playable characters. Each ring has an elemental attribute and provides stat boosts, and rings with matching elements to a character can activate additional passive skills and special effects.
Players build a party of three characters and can switch between them freely during combat. Unlike many action RPGs, switching does not remove the previous character from the field. All three party members remain active simultaneously, and switching triggers Tag Skills that chain attacks together. This means party composition and the timing of your switches are both tactically important.
Yes. MONGIL: STAR DIVE is developed by Netmarble Monster as a reboot of Monster Taming (released in 2014 as Creature Academy in some markets). It retains the core concept of taming and equipping monsters but rebuilds the game with Unreal Engine 5, a significantly deeper narrative, and a new cast of protagonists.