What is HELIX 3?
HELIX is an AI-native, engine-agnostic virtual-world platform. Create, publish, host, and monetize multiplayer 3D worlds — playable instantly from a single link.
HELIX is a virtual-world platform. It is not a game engine and it is not a single game — it is the layer that sits on top of a rendering engine and provides everything a multiplayer virtual world needs but a renderer doesn't:
- Identity — one account across every world, with instant guest play.
- Economy — a real currency (LIX), a marketplace, and creator payouts.
- Persistence — durable Cloud Save and volatile Memory Store.
- Items & inventory — universal items that work across worlds and runtimes.
- Social — friends, presence, invites, chat, and proximity voice.
- Multiplayer — instances, networking, and server-authoritative state.
- Hosting & distribution — your world is playable instantly, on any device, from a link.
You reach all of it through one SDK.
The one-liner
HELIX is an AI-native, engine-agnostic virtual-world platform — "Roblox for adults, on the web." Creation no longer has to happen inside a proprietary studio. AI agents become the studio; HELIX becomes the runtime, economy, identity, and distribution layer.
One platform, two runtimes
This is the core idea, and it shapes the whole of these docs.
Identity, LIX, storage, inventory, marketplace, social, analytics, moderation. The same backend serves every runtime. Documented once, in the Platform API.
Where your world actually renders and runs. Web (TypeScript, the canonical contract) and Native (Unreal: C++, Blueprint, PuerTS, UnLua) both call the same Platform API.
The Web SDK is the canonical, frozen contract. The Native runtime mirrors it 1:1 — every function, including character and world functions. If you learn the API on one runtime, you know it on the other. See Platform vs Engine SDK for the full mental model.
Who HELIX is for
- AI-assisted creators shipping multiplayer web-3D experiences who don't want to build identity, economy, or netcode from scratch.
- Studios and teams that want their world on web today and on Unreal later — without rewriting game logic against a different API.
- AI agents building worlds autonomously through the CLI and MCP server.