Engine AI / Feature
Free tier
Usable without a paid AI seat (free CLI/plugin, Personal trial, or open-source).
4 of 6 tools marked Yes.
| Tool | Status | Notes | Source |
|---|---|---|---|
| Unity AI tools | Yes | CLI, MCP server and official plugin free; Personal gets assistant trial then $10/mo | Source |
| Meta Horizon AI tools | Yes | metavr CLI / MCP free via native installer or npm | Source |
| Blender MCP ecosystem | Partial | Blender itself free; Meshy plugin free to download (Bridge needs Pro+) | Source |
| Godot AI plugins | Yes | Godot engine free and open source | Source |
| Unreal AI assistants | Yes | Unreal Engine free to download under Epic EULA | Source |
| Aura | Partial | Autopilot playtesting agent reported Apache-2.0; full product pricing not verified | Source |