Introduction

Manus just made character animation a built-in step of its AI game builder. On October 21, Manus announced on X that its Game Dev feature now handles rigging and animation for you. You describe a 3D game, Manus builds it, and the characters come out with expressive motion already attached. You don't have to rig a skeleton or animate each action by hand. In the same update, Manus says its 3D generation now runs several times faster.

That matters because animation is where most solo 3D projects stall. You can get a mesh out of a generator in minutes. Getting that mesh to walk, jump, and react without it looking like a mannequin is still specialist work. Manus is betting that most people building small browser games would rather skip that step entirely.

What shipped

  • Product and vendor: Manus Game Dev, from Manus
  • Modality: text-to-playable 3D browser games, with auto-rigged, animated characters
  • Open vs closed: closed, hosted agent. No weights and no local install
  • Where to run it today: manus.im/features/game-dev, signed in to Manus
  • New in this update: rigging and character animation built into the game workflow, and 3D generation that Manus says is several times faster
  • Primary source: the

The Magic

Game Dev is not a separate engine you learn. It's one long conversation with an agent. The workflow on the feature page has three stages. You start from a template plus a plain-language pitch. You playtest and ask for changes to rules, scenes, controls, or assets. Then you publish and share a link so people can play in their browser. Supported multiplayer games can also be shared with friends.

The rigging update slots into the middle stage. Before, a generated 3D character was mostly a static asset you had to work around. Now Manus attaches a rig and the motion itself, so asking for "a heavier, stompier run" or "a celebration when the level ends" becomes a request in chat instead of a session in an animation tool.

The demo Manus linked, Aisle Rush, shows what the output looks like. You race a shopping cart through a 3D supermarket, grab everything on your list, and reach checkout before closing time, and wrong items cost you. It's a Three.js build served straight to the browser, which tells you where these games live: on the web, one link away from a player.

Pro Tip

Write your first prompt like a design doc, not a vibe. Name what the player does, how they win, how they lose, and the look you want. Then name the actions your main character needs, such as idle, run, jump, hit, and win. Animation is now generated for you, so the clearer your list of actions, the fewer rounds you'll spend asking for missing ones.

Step-by-Step Guide

  1. Open Manus Game Dev and sign in when prompted.
  2. Pick a template or a showcase game to build on, or start from a blank idea.
  3. Paste a tight pitch that spells out the character's moves:

A third-person 3D arena brawler in a neon night market. The player is a stocky street-food cook armed with a wok. Actions: idle, run, dodge roll, wok swing, hit reaction, victory dance. Waves of mischievous paper-lantern spirits attack; survive 5 waves to win, lose if HP hits zero. Bright jewel-tone lights, chunky stylized characters, readable silhouettes.

  1. Playtest the first build, then iterate on feel in plain language:

Make the run cycle heavier with more weight on each step, make the dodge roll faster, and add a short camera shake when the wok connects.

  1. Publish and share the game link once it plays the way you want.

What we don't know yet

Manus hasn't published technical details on which rigging or motion system powers this, how much control you get over individual clips, or whether you can export the rigged characters to Unity, Unreal, or Godot. The announcement also doesn't mention pricing for the animation feature. If you need clean FBX or GLB handoff into an engine pipeline, test that before you plan a project around it.

Conclusion

Auto-rigging inside an agent that also writes the game code is a real shift for hobby and prototype work. It turns animation from a specialist bottleneck into one more line in your prompt. It won't replace a dedicated animator on a shipped title, but for game jams, pitches, and small browser games, Manus just removed the step that made most people quit 3D. Go build something that moves.

—Titus