Monster Taming Meets Roguelite

Become the Alter and fight alongside mythical creatures through ever-changing Fractured Ruins.
Fight, advance, die, repeat!

Monster Taming Meets Roguelite

Become the Alter and fight alongside mythical creatures through ever-changing Fractured Ruins.
Fight, advance, die, repeat!

Monster Taming Meets Metroidvania

Collect, train and battle monsters in a lovely side-scroller pixel world.

Monster Taming Meets Metroidvania

Collect, train and battle monsters in a lovely side-scroller pixel world.

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Become the Alter and
Guide Mythical Creatures

Explore the ever-changing expanse of Terastae where you encounter mythical creatures that are trapped in a cycle of death and rebirth. As the Alter you have the ability to bond with them and guide your party of three monsters to escape their fate.

Explore the ever-changing expanse of Terastae where you encounter mythical creatures that are trapped in a cycle of death and rebirth. As the Alter you have the ability to bond with them and guide your party of three monsters to escape their fate.

Adapt your Strategy
to Each Combat

Fight ferocious Monsters and divine bosses in challenging turn-based battles. Adapt your strategy to each combat, consider your synergies, and plan the actions of your Monsters wisely while utilizing the four elements of Aether.

Fight ferocious Monsters and divine bosses in challenging turn-based battles. Adapt your strategy to each combat, consider your synergies, and plan the actions of your Monsters wisely while utilizing the four elements of Aether.

Take an Active Role in Combat
Alongside your Monsters

Take an active role in combat alongside your monsters! As the protagonist you support your team with unique abilities based on the unlockable player classes. Each class has its distinguishing features that change how you play, allowing you to experience the game in your own way.

Take an active role in combat alongside your monsters! As the protagonist you support your team with unique abilities based on the unlockable player classes. Each class has its distinguishing features that change how you play, allowing you to experience the game in your own way.

Experiment with Deep
Skill Choices

Build a team of mythical creatures, experiment with deep skill choices and get a sense of discovery and satisfaction after creating a build that feels so good that it feels broken. Experience the different possibilities each monster offers.

Build a team of mythical creatures, experiment with deep skill choices and get a sense of discovery and satisfaction after creating a build that feels so good that it feels broken. Experience the different possibilities each monster offers.

Go Through the Cycle of
Death and Rebirth

The world of Terastae can be harsh and unforgiving. When your monsters die in combat, you will lose them. Permanently. But you have the power to bring them back and use their souls for rebirth. Watch your monsters grow stronger from previous lives and defy death!

The world of Terastae can be harsh and unforgiving. When your monsters die in combat, you will lose them. Permanently. But you have the power to bring them back and use their souls for rebirth. Watch your monsters grow stronger from previous lives and defy death!

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Explore

Monster Sanctuary is a land where Monster Keepers live in harmony with monsters they raise. But the arrival of unusually powerful monsters has broken the peace among the land. Join one of the Monster Keepers on his journey as he tries to unravel this mystery.

Monster Sanctuary is a land where Monster Keepers live in harmony with monsters they raise. But the arrival of unusually powerful monsters has broken the peace among the land. Join one of the Monster Keepers on his journey as he tries to unravel this mystery.

Battle

Experience challenging turn based combats. Utilize an integrated combo system and unique skill trees while exploiting enemy weaknesses to defeat your foes. Play strategically to earn rewards for efficient combat completion. The less turns needed, the higher the chance to receive rare items.

Experience challenging turn based combats. Utilize an integrated combo system and unique skill trees while exploiting enemy weaknesses to defeat your foes. Play strategically to earn rewards for efficient combat completion. The less turns needed, the higher the chance to receive rare items.

Hatch Monsters

Monster eggs are a possible rare drop after combat. Hatch the eggs to increase the size of your party. Creating a versatile team allows you to adapt to changing enemies and develop unique playstyles.

Outside of combat, specific monsters possess abilities to open new areas for the player to explore.

Monster eggs are a possible rare drop after combat. Hatch the eggs to increase the size of your party. Creating a versatile team allows you to adapt to changing enemies and develop unique playstyles.

Outside of combat, specific monsters possess abilities to open new areas for the player to explore.

Learn Skills

Every monster has an individual skill tree with many active and passive skills. Specialize your monsters however you want: damage dealing, critical hits, combo hits, healing, protecting, buffing, debuffing or any combination of those.

Every monster has an individual skill tree with many active and passive skills. Specialize your monsters however you want: damage dealing, critical hits, combo hits, healing, protecting, buffing, debuffing or any combination of those.

Collect Items

There are countless treasures all over the Monster Sanctuary. Find them to get items and powerful equipment. Equip your monsters to strengthen and individualize them.

There are countless treasures all over the Monster Sanctuary. Find them to get items and powerful equipment. Equip your monsters to strengthen and individualize them.

Play Monster Sanctuary Now!

Hi, we are Miy Games!

MIY GAMES LTD is a indie game developer studio from United Kingdom. Born out of a free-time project our team has grown into a small, international and passionate team that is working together remotely from all over the world, now on our next monster taming project Altersgate.

We want to develop games the "it's done when it's done"-way. No dates, no deadlines. We take the time we need to make the game right and complete. And we don't want to crunch.

Also, staying close to the community is an important part of the company!

Adam

Lead Developer

MTG Sensei

Anton

Lead Game Designer

RPG Enthusiast

Adam

Art Director

Archenemy of Birds

Anni

Developer

Master of Memes

Basti

Tech Artist

Team DJ

Daan

QA/Community Manager

All-Seeing Eye

Daniel

Community Manager

Meme Library

Fabian

Sound Designer

Cat Whisperer

Emily

Head of PR

Whoop! Whoop! It's the Sound of the Police!

Jorge

Pixel Artist

Good Mood Machine

Malika

Pixel Artist

Tilemap Terminator

Manoah

Developer

The Annoying Little Brother

Olga

Backoffice

Boardgame Villain

Steffen

QA/Game Designer

The New Guy

Want to get in touch?

General Inquiries [email protected]

PR & Business [email protected]

FAQ

You can download the early access version of Altersgate for free on this website. As for the game's release, we'll make announcements on our social channels once we have a release date.

Yes, an Early Access period is planned to begin in November 2025. We'll make announcements on our social channels and update the FAQ when we have any details.

You won't need to buy the game; it's based on a free-to-earn model.

Currently, you can play the Altersgate Early Access in the following languages: English, Portuguese - Brazil, French, German, Simplified Chinese, Japanese. More languages will likely be added for the game's release, although we don't have a definite list yet. This section will be updated when more info is available.

Currently we have plans for Windows and MacOS at launch. For other platforms, we'll see!

No worries! Altersgate is an original universe with new monsters to find. However, Hades fans will find some design similarities as we stick to our core strengths.

Yes, we are planning to include multiplayer features, including both PvP and Co-Op modes, to enhance the experience.

Not in the demo, but this feature will be available in the Early Access version.

You can follow the development on different social platforms - see the links at the bottom or top. We post the most development insights on our Discord server.

We try to read every comment on our social channels, so feel free to leave thoughts there! If you want to directly engage with us, the place to be is Discord though.

Aww, so nice of you to ask! If you haven't followed us on Twitter already, it would help us a lot if you could do so! Also, we are super thankful for everyone in our community making it a great place to be, especially on Discord, whether it's talking about the game, interacting with us and other or giving feedback.

They use Jotunns instead.
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