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Heart Duels
Join 1 of 3 factions. Meet over 80 NPCs, challenge them to card duels, unlock their cards, stories and quests. Discover the lore of Erisa. Collect over 120 cards, build decks, and master the tactical board to become King of Duels. Challenge friends to 1v1 multiplayer duels.

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Features
Single-player
Online PvP
Steam Cloud
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔
Simplified Chinese ✔
Check out the entire Encased Heart collection on Steam

Download Heart Duels Demo

This game is not yet available on Steam

Planned Release Date: Aug 7, 2026

This game plans to unlock in approximately 2 months

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About This Game

Heart Duels

Discover the world of Erisa by joining one of three factions:

Each faction has its own worldview, identity, characters, and story path. Meet faction members, challenge them to ranked duels, earn their cards, and unlock their stories, quests, and world lore.

Collect cards, build your custom deck, master the tactical board, and rise through the ranks to become the King of Duels.

Tactical Card Game Mechanics

Heart Duels is a trading card game where positioning matters as much as the cards you play.

Duels take place on a compact tactical board with front rows, back rows, and special cover lanes. Units have keywords and abilities, while spells and items give you more ways to shape the battle.

Your cards alone do not determine your fate. Skill, tactics, and clever positioning decide who wins.

Master your cards. Control the board. Outthink your opponent.

Story and Lore Rich

Heart Duels features:

  • Over 80 NPCs

  • Over 120 cards

  • Three faction-based playthroughs

  • Ranked duels against NPCs

  • Character stories and quests

  • Unlockable world lore

Every NPC has their own card. Defeat them in ranked duels to increase your rank, collect their card, unlock their story, and discover more about the world of Erisa.

Each NPC story is carefully crafted to add color, texture, and mystery to the world.

Customize Your Own Card

Create your own personal card with customizable stats, keywords, and abilities.

Unlock new keywords and abilities as you progress, then forge a card that fits your strategy and helps pave your way to victory.

Multiplayer

All cards are unlocked for multiplayer.

Build your deck, shape your strategy, and challenge your friends to friendly 1v1 online duels.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Heart Duels is a solo-developed game. I use AI-assisted tools for some art and audio. All assets are curated and integrated by me to create a cohesive experience.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Intel Core i3-6100 / AMD FX-6300 or equivalent
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GTX 750 Ti / AMD Radeon R7 260X / Intel UHD 630 or better
    • Storage: 4 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11 64-bit
    • Processor: Intel Core i5-8400 / AMD Ryzen 5 2600 or better
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GTX 1060 / AMD RX 580 or better
    • Storage: 4 GB available space
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