MistHunt

Community-powered daily mysteries that bring Reddit together, one riddle at a time.

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About the Project – MistHunt

Inspiration

MistHunt was inspired by the growing fragmentation of online communities. Platforms like Reddit host millions of users, yet meaningful cross-community collaboration is rare. At the same time, puzzle and mystery content consistently thrives across diverse subreddits—whether in r/riddles, r/mystery, or r/ARG.

We saw an opportunity to design a system that would bring Redditors together through shared problem-solving. Just as Wordle and Connections showed the viral power of daily challenges, we wanted to extend that idea into a collaborative experience, one that leverages Reddit’s structure and fosters genuine community interaction.

What We Learned

Throughout the development of MistHunt, we discovered that:

  • Community-first development is non-negotiable. Success on Reddit requires deep respect for moderator rules, subreddit culture, and organic engagement.
  • Collaboration ≠ communication. Real collaboration needs structured frameworks, visibility of progress, and roles for contributors.
  • Scalable real-time systems demand robust infrastructure—optimizing WebSockets, database pooling, and caching were critical lessons.
  • Ethics in AI content generation are key. We built validation pipelines to ensure that AI-generated puzzles are solvable, factually accurate, and culturally sensitive.
  • Seamless UX across platforms is essential. Users constantly switch between Reddit, our platform, and mobile, so continuity of state and notifications mattered.

How We Built It

Frontend

  • React.js + TypeScript for a type-safe, scalable UI
  • Redux Toolkit for managing puzzle state across users
  • Material-UI with Reddit-inspired theming
  • Socket.io for real-time collaboration

Backend

  • Node.js + Express for API services
  • PostgreSQL with optimized indexing for progress tracking
  • Redis for caching and session management
  • JWT + Reddit OAuth for authentication

Reddit Integration

  • PRAW API for automated clue posting and monitoring
  • Webhooks to track engagement across subreddits
  • Permission systems to collaborate with moderators respectfully

AI Mystery Generation

  • OpenAI GPT-4 with custom prompt engineering
  • Multi-domain puzzle creation spanning $3$–$7$ knowledge areas
  • Automated fact-checking pipeline for accuracy

Deployment

  • Dockerized containers for dev/prod parity
  • AWS EC2 + CloudFront CDN for scalability
  • GitHub Actions for CI/CD automation

Challenges We Faced

  1. Reddit API Rate Limiting – Early posting strategies hit limits; solved via smart queuing and mod partnerships.
  2. Community Reception – Some subreddits saw content as spam; we pivoted to a collaboration-first approach.
  3. Puzzle Difficulty Balancing – Too easy and it’s boring; too hard and people quit. We built dynamic difficulty adjustment based on real-time progress.
  4. Real-Time Synchronization – Managing consistent puzzle states across Reddit, webapp, and mobile required sophisticated WebSocket + fallback polling.
  5. Scalability – Our MVP crashed after hitting r/InternetIsBeautiful front page, pushing us to redesign for viral-ready scaling.

MistHunt has already shown strong community impact—15,000+ cross-community interactions in the first month alone—and continues to grow organically through collaboration and shared discovery.

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