Exists

Overview

Exists is a browser-based AI platform that turns short text prompts into playable 3D multiplayer games. Running on a cloud-hosted fork of Unreal Engine, it lets anyone—from hobbyists to studios—prototype, customize, and share interactive worlds without installing software or writing code. The service is currently in a free open beta that requires registration.

Key Features

• AI text-to-3D world generation: Convert natural-language descriptions (and optional reference images) into fully rendered terrains, props, lighting, and basic game logic.
• In-browser multiplayer editor: Tweak layout, rules, and art style in real time inside your web browser; changes propagate instantly to connected players.
• Avatar \& asset spawning: Generate characters, vehicles, and props on demand, then place or modify them with drag-and-drop controls.
• One-click cinematic rendering: Record gameplay clips or fly-through videos at up to 4K for marketing or social media.
• Real-time collaboration: Invite teammates to co-edit the same world, with simultaneous viewport syncing and chat.
• Cloud deployment \& scaling: Worlds are streamed from Exists’ GPU servers, so players join by URL without downloading a client.

How It Works

1. Enter a text prompt (e.g., “snow-covered cyberpunk city with neon alleys and hovercars”).
2. Exists’ diffusion and LLM pipeline creates terrain, meshes, textures, shaders, and network code inside a containerized Unreal instance.
3. The scene opens in the browser editor where you can move objects, spawn NPCs, or switch game modes (deathmatch, co-op quests, etc.).
4. Share an invite link; instances spin up automatically and shut down when empty.
5. Export video clips or, in upcoming releases, download an Unreal project for offline development.

Use Cases

• Rapid game prototyping: Validate ideas or pitch concepts to investors within minutes.
• Virtual events: Host meet-ups, conferences, or brand activations in a custom 3D venue.
• Interactive storytelling: Build branching narrative spaces for comics, films, or VR experiences.
• Education \& training: Simulate historical sites or safety drills where multiple learners collaborate.
• Marketing assets: Generate cinematic fly-throughs or short gameplay teasers without a full art pipeline.

Pros \& Cons

Advantages

• No-code entry point: Lowers technical barriers for designers, writers, and marketers.
• Instant cloud access: Works on modest hardware; heavy rendering happens server-side.
• Multiplayer by default: Text-to-world output includes networked gameplay templates.
• Free beta: Early adopters can experiment without licensing fees.

Disadvantages

• Browser/latency limits: Large scenes or high player counts can strain bandwidth and introduce lag.
• Beta stability: Occasional generation errors, missing collisions, or login queue times.
• AI interpretation risk: Prompts may yield unexpected geometry; manual cleanup is sometimes required.
• Export constraints: Full project export to local engines is on the roadmap but not yet generally available.

How Does It Compare?

Platform	Focus	Multiplayer	In-browser Editing	Export Options	Notable Limitations
Exists	End-to-end text-to-multiplayer game creation	Yes (team modes, vehicles)	Yes	Video clips now; Unreal project export planned	Beta queue times; browser GPU limits
DeepMind Genie 2	Procedural 3D “minute-long” worlds from text	No (single-player demo)	No	None (research demo)	World persists for ~60 s; not editable
Ludo.ai Playable Generator	Prototype 2D/3D loops from concepts	Optional (simple)	Web-based wizard	Unity C# scripts	Limited visual fidelity; not full worlds
Meshy.ai	Text/image-to-3D asset \& animation generator	N/A	Web	GLB/FBX/MP4	Asset-only; user assembles game logic elsewhere
Sloyd.ai	Real-time parametric text-to-3D models	N/A	Web	GLB	Focuses on individual objects, not environments

Key takeaway: Exists is currently the only open beta that combines text-to-world generation, real-time browser editing, and ready-made multiplayer templates in a single workflow. Competitors either stop at asset generation (Meshy, Sloyd) or remain research prototypes without live editing (Genie 2).

Final Thoughts

Exists lowers the barrier between idea and playable game, offering near-instant 3D world creation, browser-based collaboration, and built-in multiplayer. While the beta still has performance ceilings and occasional quirks, its cloud architecture and Unreal integration make it a compelling option for rapid prototyping, virtual events, and creative experimentation. As export tools mature and the AI model improves, Exists could become a cornerstone for studios and solo creators seeking faster, code-free game development.