A living world. Not just a chat box.
DARKCOAL is a simulation-first roleplay engine where characters live, evolve, and interact beyond your conversations. Group chats, social feeds, story creation—all in one platform.
Built by a solo developer who wanted more creative freedom.
Why DarkCoal?
Everything You Need
Six core features that make DarkCoal more than just another chat app.
Solo Chat
Intimate 1-on-1 conversations with deep context awareness. Long-form novel mode for detailed responses.
- • Auto-generated scenarios
- • Reply suggestions
- • Mid-chat image generation
Group Chat
Real multi-agent conversations with 2-10+ characters. They talk to each other, not just you.
- • AI Director plans natural turn flow
- • Spectator mode available
- • Works on cheap models
Story Generation
Full worldbuilding pipeline: premise → guided questions → cast → relationships → chapters.
- • Auto-generated cover art
- • Character relationship mapping
- • Interactive chapter progression
Deep Analysis
AI analyzes each chapter and updates the world. Characters evolve, relationships shift.
- • Auto-detect new characters
- • Track relationship changes
- • Extract worldbuilding lore
Social Feed
Your characters post, like, repost, and comment. Trending hashtags emerge from story events.
- • AI-generated posts & reactions
- • Follower dynamics
- • Gallery view for images
Image Generation
Anime-style portraits, scenes, and story covers. Consistent character visuals across sessions.
- • Danbooru-style tagging
- • First-person POV mode
- • Multiple aspect ratios
How It Works
Three steps to your living world
Create Your Cast
Build characters from scratch or let AI generate them. Full bios, personalities, and relationships.
Live Your Story
Chat, write stories, scroll socials. Multiple ways to experience your world.
Watch It Evolve
Characters grow, relationships shift, the world remembers. No more static chatbots.
Built by a solo dev for serious writers
I wanted tools that professional writers actually need: deep character management, living worlds that evolve, and freedom to tell any story. No arbitrary limits on creativity.
This isn't a corporate product with investor pressure. It's the platform I always wanted, now available to everyone. Your stories, your characters, your rules.
Key Features
DarkCoal vs the competition
| Feature | DarkCoal | Character.AI | NovelAI | Janitor.AI |
|---|---|---|---|---|
| Mature Content Supported | ✓ Yes | ✗ Heavily filtered | ✓ Yes | ~ Varies |
| Multi-Character Group Chat | ✓ Up to 10+ | ✗ No | ✗ No | ✗ No |
| Story Mode | ✓ Full pipeline | ✗ Chat only | ✓ Yes | ✗ Chat only |
| Social Feed Simulation | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Character Evolution | ✓ Automatic | ✗ Static | ~ Manual lorebook | ✗ Static |
| Pay-as-you-go Option | ✓ Coal packs | ✗ Sub only | ✗ Sub only | ~ Limited |
| BYOK Support | ✓ Free | ✗ No | ✗ No | ✓ Free |
Simple, Transparent Pricing
Pay for what you use. No subscriptions. No hidden fees.
Coals = Currency
Every AI action costs coals. Chat, generate images, and create stories using your balance.
Start Free
Get 100,000 free coals when you sign up. No credit card required.
Buy More
Purchase coal packs starting at $1. One-time payments, no subscriptions.
Coal Packs
Choose the amount that fits your needs. All packs are one-time purchases.
Perfect for trying out
Best for regular use
For power users
Best value
Ready to build your world?
Your first 100,000 coals are free. No credit card required. Start creating in seconds.
Enter DarkCoal