Ultimate Engine CoPilot alternatives

AI assistant that edits Unity and Unreal projects.

• Best for: Unity developers and teams who want an assistant that plans and makes changes inside their existing project
• Pricing: Free trial with 100 credits; Pro $20/month, Advanced $60/month, Ultimate $180/month (as of October 2026)
• Export: Not applicable: Bezi edits your own Unity or Unreal project, which stays yours to build and ship with the engine
• Watch out for: Unreal support only entered early access, with a sign-up for testers, on September 23, 2026, and most of Bezi's documentation is written around Unity.

Roblox's built-in AI for scripting and building.

• Best for: Roblox creators, from first-timers to experienced developers, who want AI to plan, script and populate a game inside Studio
• Pricing: Roblox Studio is free; Roblox's Assistant docs don't state a price (as of October 2026). You can also add your own Anthropic, OpenAI or Google API key
• Export: No: games run on the Roblox platform. Generated meshes and scripts live in your Roblox place
• Watch out for: Your game lives on Roblox and nowhere else, and procedural model generation is capped at 50 models in a rolling 24-hour window.

Unity's in-editor AI assistant, generators and MCP.

• Best for: Unity 6 developers who want AI help inside the Editor, or who want to drive Unity from Claude Code, Codex, Cursor or another agent
• Pricing: In-editor assistant included in Pro, Enterprise and Industry; Personal users get a 14-day trial, then $10/month. The official plugin, Unity CLI and its MCP server are free (as of October 2026)
• Export: Yes: everything the tools make is ordinary Unity project content, which Unity builds for 25+ platforms
• Watch out for: Assistant credits don't roll over and AI features pause at zero; Unity says credit rates can change without notice, and the tools are still in beta.

Open-source no-code game engine with an AI agent.

• Best for: Beginners and hobbyists who want a real 2D or 3D engine without writing code, with AI help inside the editor
• Pricing: Free plan with 40 AI credits a month; Silver $7.99, Gold $13.99 and Pro $39.99 a month billed monthly, or less billed yearly (as of October 2026)
• Export: Yes: every plan publishes to gd.games, desktop and Google Play (free plan once a day); iOS from Gold; GDevelop's pricing page says the editor and engine are open source under MIT
• Watch out for: GDevelop's blog says the AI Agent isn't an instant "make my whole game" button; complex systems take several prompts and fixes, and it mainly uses official extensions.