KARST: Speed the Void
A downloadable Asymmetric Experience
🛑 KARST ALPHA STATUS
Karst is evolving into a competitive, high-stakes asymmetric speedrun game! To ensure the best performance, continuous metric tracking, and stable database integration, public downloads are temporarily closed.
Want to challenge your friends, claim the top spot on the leaderboards, and play live with the developer? We are opening exclusive Private Playtests soon!
✨ No accounts needed to play. Jump straight from your browser into our private sessions!
🌑 Karst: Dive into the Darkness (But Not Alone)
In this unique asymmetrical multiplayer experience, survival depends entirely on your coordination. The environment is unforgiving: spikes, bottomless pits, and above all, the Darkness itself—a creeping void that drains your team’s life force the moment they linger too long in the shadows.
🎮 Two Roles, Two Ways to Play
- 🏃 The Explorers (Keyboard): Play as agile but fragile adventurers. Run, jump (with highly polished physics and game feel), climb ropes, and trigger ancient mechanisms to clear the path. Your only rule: Never leave the Guardian's halo of light.
- ✋ The Guardian (Webcam & Augmented Reality): One player becomes the supreme protective entity. Using real-time hand-tracking technology via your browser's webcam, your real hands interact directly within the game world to light the way and trigger environmental interactions!
⏱️ Built for Speedrunners & Pure Competition
- 📊 Real-Time Metric Tracking: We track everything. Every single run is put under the microscope, and all your metrics—down to the millisecond—are saved directly into the database.
- 🏆 Leaderboard Rivalry: Compete actively against your friends, your team, and the rest of the community to squeeze out the absolute best scores.
- ⚡ Zero Friction: No account creation, no password confirmations, no registration forms. You click the private playtest link, and you are instantly in the game competing.
✨ Key Features
- 🤖 Innovative Webcam Controls: The Guardian physically interacts with the level using their own hands. A unique, mind-blowing hybrid experience.
- 🎨 Art Direction & "Juice": Full UI overhaul, real-time dynamic shadows, cinematic camera sequences, full particle systems, and screen shakes for total immersion.
- 🗺️ Handcrafted Levels & Modifiers: A meticulously designed progression introducing new hazards at every turn, spiced up by mutant game modes (Lunar Gravity, Meteors, and more) to flip the rules.
📋 Technical Setup for Playtests
To ensure the best experience in the depths of Karst once you grab your playtest access on Discord:
- Browser: Use Google Chrome or Microsoft Edge for optimal MediaPipe performance.
- Webcam Access: The Guardian player must allow camera access in the browser popup.
🛠️ Created by Cléo Garcia / Xerith
French Backend & Web Developer | Student-Entrepreneur (ISIS - INSA Group)
Curious about the tech stack behind the game or want to see my other engineering projects?
👉 Visit my Portfolio
Designed & developed with passion. 👨💻
| Updated | 13 days ago |
| Status | In development |
| Author | Cléo Garcia |
| Genre | Platformer |
| Made with | Adobe Photoshop, Audacity |
| Tags | 2D, asymmetric, Augmented Reality, Co-op, Difficult, hand-tracking, Indie, Multiplayer, webcam |
| Average session | A few hours |
| Languages | English, French |
| Inputs | Keyboard, Webcam |
| Accessibility | Subtitles, Configurable controls |
| Multiplayer | Server-based networked multiplayer |
| Links | Support |
| AI Disclosure | AI Assisted, Code, Graphics |
Development log
- 🌑Beyond the Grave: Speedrun Tech, Boss Reimagining, and Active Spectating!19 days ago
- 🌑Shaping the Divine: UI Overhaul, Game Juice, and Reimagining AR Gameplay!24 days ago
- 🌑 Karst Devlog: Development continues in the shadows!31 days ago
- 🌑 Karst is live! Dive into the Darkness (Beta v1.0)Mar 04, 2026











Comments
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Any trailer video?
Not yet, but it’s coming very soon! 👀 I’m currently working on capturing some real gameplay footage to update the page. Get ready, because the upcoming release is going to be incredible. I’m actively working on it right now behind the scenes. Stay tuned!
Quick update! I’ve just uploaded a few gameplay GIFs so you can get a sneak peek of the mechanics and the overall vibe in action. I’m currently pushing hard on the polishing phase to make everything feel pixel-perfect. My goal with this is to design something you’ve literally never seen before in an AR/webcam game. Let me know what you think of the GIFs!