Monster Crown: Sin Eater

RPG· Creature Collector· JRPG· Turn-Based Combat

Released Apr 2026

Hand-craft your team of perfect Monsters and wage a one-man war against fate and the world in the Crown Nation! With a True Crossbreeding system, every Monster is entirely your own!

84% positive · 206 reviews

Not yet

Released, but content still planned

High confidence

Content Planned

Not yet

Released, but content still planned

High confidence

Content Planned

Where to buy

Steam Updated 6 Oct 2026 Lowest $19.99 $24.99 −20% Green Man Gaming Steam key Updated 12 Oct 2026 $24.99

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Evaluation

Monster Crown: Sin Eater launched on April 30, 2026 on PC and Nintendo Switch after a successful Kickstarter campaign that fully funded on March 30, 2025. The developer confirmed at that time that funding was secured to complete the game and bring it to both platforms. Since launch, the studio has been actively supporting the game. A post-launch patch (1.0.3) shipped on May 6, 2026 with balance adjustments, quality-of-life improvements, and the addition of Party-wide Experience Share based on community feedback. A further substantial UI/UX overhaul (Patch 1.0.4) followed on June 5, 2026, adding new interfaces for the breeding, fusion, and box management systems — features that had been highly requested by the community. The game's DLC listing includes an official soundtrack that has been announced on the store but has not yet been released and has no release date set. This represents content that has been committed to but not yet delivered. No content beyond the soundtrack DLC has been announced, and the developer has not indicated that further game content updates are planned beyond ongoing post-launch polish.

Evidence

The Monster Crown: Sin Eater Soundtrack DLC is listed on the store as unreleased with no release date set.

dlc listing source content planned

high

Patch 1.0.4 shipped with a major UI/UX overhaul of the breeding, fusion, and box systems, adding new interfaces and stat inheritance previews.

news post · Jun 5, 2026 source development ongoing

medium

Content

1 of 1 released · no outstanding content

Released

Monster Crown: Sin Eater Soundtrack

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Media

Details

Developer

Studio Aurum

Publisher

Studio Aurum

Achievements

Platform

Windows

Controller

full support

Steam Deck

Verified

Players

Single-player

Creature Collector JRPG Turn-Based Combat PvE Open World RPG 2D Character Customization Choices Matter Multiple Endings Story Rich Anime Pixel Graphics Party-Based RPG Stylized

About this game

Explore the beautiful, textured and detailed environments of The Crown Nation, solely brought to life by our environment artist Arex. Immerse yourself in the soundscape of Sin Eater by music directed by Onion_mu and the sound team. Breed over 1000 unique monster sprites lovingly crafted by RacieB with the most robust and polished true crossbreeding system implemented in a video game by Kyle Toom.

Game Director APE-AHAB, in partnership with Jason Walsh (the mastermind behind "Monster Crown") have a truly wild world and mind-bending story in the works for you to experience. Start your journey through the madness of Monster Crown: Sin Eater.

With over a thousand unique, hand-crafted Monster sprites, and hundreds of colors to choose from, you'll find the ace Monster that's right for you! And once you've found your favorites, use Monster Crossbreeding or perform Monster Fusion to reach new heights!

The game's storyline puts you in the shoes of Asur, a young farm boy who has aspired to be a Monster Tamer his whole life, just like his big brother. When his family is put in mortal danger, he must act to set things right, and change the Crown Nation forever.

Be sure to build yourself a powerful team of mighty companions. Turns out, Asur won't have much luck going it alone!

Certain Monsters also transform when exposed to certain elements. Be sure to try strange new items on your favorite Monsters — you never know what's going to happen!

With so many monsters, obtaining them all, their crossbreeds and their transformations (and the transformation's crossbreeds) is quite an undertaking, only serious collectors should attempt this!

Along the way, you'll explore towns packed with interesting characters. Another way Monster Crown: Sin Eater elevates the standard tropes is with branching dialogue and decisions that have a real impact on the game.

You'll travel the world and encounter Monsters roaming the wilds. Each one has a personality; some will flee from you, some will give chase, some — the more sinister Monsters — will stalk you from the shadows.