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Particle Hearts
Underwater Fire
  • Adventure
  • Casual
  • Indie
  • RPG
  • Single-player
  • Steam Achievements
  • Full controller support
  • Steam Cloud
  • Family Sharing
Coming soon on

Explore a world made entirely of particles. Use special abilities to manipulate those particles, solve puzzles, avoid detection, and uncover the role you play in this sinister and beautiful land.

About the game

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Particle Hearts is a 3rd-person adventure game where you explore a world made entirely of particles. Use special abilities to manipulate those particles, solve puzzles, avoid detection, and navigate this sinister and beautiful land.

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Along the way, meet various creatures, some of which will help you understand your purpose and others who are tasked with hiding it from you.

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Collect memories, find hidden paths, and piece together your connection to this land that isn’t always what it seems.

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■ Gain multiple abilities that allow you to manipulate the particles around you.

■ Use your abilities to solve puzzles, evade enemies, and gain access to hidden areas.

■ Freely explore open environments any way you’d like.

■ Experience a story where the line between friend and foe is often blurred. Meet various creatures that help you unravel your purpose in this land.

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Screenshots and videos

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Upcoming Aug 25, 2025

The game is scheduled for release on Aug 25, 2025. Provide your players with the benefits of pre-ordering your game and the details on its development stage.

System requirements

Minimum
OS
Windows 10
Processor
Intel or AMD Dual Core CPU
Memory
8 GB RAM
Graphics
Geforce GTX 750 / Radeon R7260X with 1GB Memory
DirectX
Version 10
Storage
4 GB available space
Sound Card
DirectX compatible sound card
Minimum
OS
Mac OS X (64-bit only)
Processor
2013 or newer Intel Core i5
Memory
8 GB RAM
Graphics
Nvidia or AMD GPU with 1GB Memory
Storage
4 GB available space

FAQ

What are the benefits of purchasing via this store?

You can purchase games at lower prices and get some special offers on this official store.

Is it safe to make purchases via this store?

The store is provided by our partner Xsolla. Xsolla is PCI DSS Level 1 which refers to the highest level of compliance with the Payment Card Industry Data Security Standard. So, all payments made via this store are completely secure.

Where can I find my game key?

You can find your purchased game key in the email provided during the checkout.

How long does it take to receive my purchase?

When your payment is successful, the game key will be sent to your email. It usually takes less than 5 minutes. If you purchased a pre-order, the key will be emailed to you when the game is released.

I didn't receive my game key. What should I do?

First, check both your Inbox and Spam folders in your email. If you still can't find the game key, contact Xsolla Customer Support for assistance.

What payment methods does the store support?

The store currently accepts payments via most popular credit/debit card brands and e-wallets. You can view all available payment options on the payment page.

Where can I find my purchase receipt?

You can find your purchase receipt in the email provided during the checkout.

What languages does this game support?

This game version supports the following languages:

Interface: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Polish

Subtitles: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Polish