Date de sortie prévue : novembre 2026

À propos de ce jeu

A new card. A new story.

MugenHeart is a Windows story player. Load a Story Card containing characters, a world, and roleplaying instructions, then continue through text conversations and choices. The AI model is included, so you do not need to assemble an AI setup or obtain an API key.

Three starter cards

• Partner Matching — Simple: Describe an adult fictional partner, your relationship, and a world or opening scene. Play out a romance, everyday life with a friend, or an adventure with a companion.
  
• Ark Mountain: Form a party and explore a dungeon with dice-based checks. The current card appears in the app under its Japanese name, クロックワーク・ブランチ.
  
• Ultimate Battle: Direct a fighter as their trainer and pursue victories in an arena through text-based battles. The current card appears as アルティメットバトルGM.

These are starter cards offering three different ways to play. Load other compatible Mugen Cards to explore other settings. This is not a trading-card or deck-building game.

AI dialogue generated on your PC

After installation, AI conversations work offline. Generating replies does not require sending your conversations to an external AI service, entering an API key, or paying external AI usage fees. Steam downloads, updates, and browsing external websites require internet access.

Keep a record of your story

Continue with conversation history, updated memories, diaries, and save/load features. As conversations grow, older dialogue and diaries are summarized for the AI's input. Summaries may omit details; perfect memory retention is not guaranteed.

Before you buy

The game primarily generates text, not character images or voices. AI replies can vary or contain errors, and perfect reproduction of every card instruction is not guaranteed. Model loading times and response speed depend on your GPU, memory, and other hardware. Please check the system requirements.

Notification de contenu généré par IA

L'équipe de développement décrit l'utilisation de contenu généré par IA dans le jeu comme suit.

AI tools assisted with static artwork, marketing images and localization. During play, a bundled language model running locally on your PC generates dialogue, narrative and diary text from your input, card instructions and conversation context. No external AI service or API key is required. No images or voices are generated during play. Output quality, response time and consistency vary with your hardware and input.

Description du contenu pour adultes

Voici la description de l'équipe de développement à propos du contenu du produit :

Three bundled starter cards offer relationship role-play, fantasy dungeon exploration and arena battles. Content may include fantasy combat, weapons, revealing fantasy outfits, mild language and romantic themes. Player input and imported cards can change generated text; outputs are not individually pre-written or reviewed.