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Summer Engine is an AI game engine and coding agent, built to make it as fun to make games as it is to play them. Describe what you want to build or change in natural language and Summer Engine will write the code for you and help you create the first game assets for your game. Instead of bouncing between ChatGPT, VS Code, and your game engine, you work in one unified environment where AI understands your entire game project and can modify scenes, code, and assets through natural language commands. What makes Summer Engine different:
  • Works with existing projects: Open your projects and keep working. Tutorials, libraries, and extensions work out of the box.
  • No lock-in: Your projects stay yours. Open them in Summer Engine or your preferred editor anytime.
  • Project Intelligence: AI understands your scenes, scripts, assets, and game logic
  • Safe Operations: Changes go through safe APIs, so nothing breaks unexpectedly
  • Privacy-First: Your code stays on your machine by default

Quickstarts

Get started in 5 minutes. Pick your path:

How do I make a game with Summer Agent?

Use Summer Agent in Summer Engine: build a complete game with full AI assistance, no coding required

How do I start a fresh project?

Start from scratch and build your first game with Summer Agent in minutes

How do I use the Summer Engine CLI and MCP?

CLI lets Claude Code, Cursor, Windsurf install and run Summer Engine. You chat in your IDE; the AI uses MCP tools.

I have an existing project. How do I add Summer Engine?

Open your existing project in Summer Engine and get Summer Agent assistance immediately

How do I make a PC game with Summer Agent?

Build and export a Windows game with Summer Agent

How do I make a Mac game with Summer Agent?

Build and export a macOS game with Summer Agent

How do I make a web game with Summer Agent?

Create a browser-playable game with Summer Agent

How do I make an iOS game with Summer Agent?

Build and export an iPhone or iPad game with Summer Agent

How do I make an Android game with Summer Agent?

Build and export an Android game with Summer Agent

How do I make a console game with Summer Agent?

Build a Nintendo Switch, PlayStation, or Xbox game with Summer Agent

How do I make a PlayStation game with Summer Agent?

Build and export a PlayStation game with Summer Agent

How do I migrate from Unity to Summer Engine?

Rebuild your Unity project in Summer Engine with Summer Agent

How do I migrate from Unreal to Summer Engine?

Rebuild your Unreal project in Summer Engine with Summer Agent

How Do I Make Games with My IDE?

Add Summer Engine to Cursor, Claude Code, Windsurf, or your favorite AI-powered editor:

How do I make a game with Cursor?

Add Summer Engine to Cursor. One-click or manual config. Full page.

How do I make a game with Claude Code?

Add Summer Engine to Claude Code. Full setup guide.

How do I make a game with Windsurf?

Add Summer Engine to Windsurf. Full setup guide.

How do I make a game with Antigravity?

Add Summer Engine to Antigravity. Full setup guide.

How do I make a game with Codex?

Add Summer Engine to Codex. Full setup guide.

How do I make a game with VS Code or GitHub Copilot?

Add Summer Engine to VS Code or Copilot. Full setup guide.

How do I make a game with Zed?

Add Summer Engine to Zed. Full setup guide.

Learn

Deep dives into Summer Engine’s capabilities:

MCP: Build with Cursor, Claude, Windsurf, Antigravity, Codex, VS Code, Zed

How to make games with Summer Engine from your IDE. MCP setup, CLI, API reference.

AI Operations

How Summer Engine modifies your project safely through natural language

Project Intelligence

How AI understands your entire codebase, scenes, and assets

Asset Generation

Create 2D art, 3D models, and audio with AI

Publishing Your Game

Export to Steam, itch.io, Mac, Windows, mobile, and consoles

Knowledge Base

Common questions about Summer Engine:

What is Summer Engine?

The AI game engine. Build games by describing them.

Is Summer Engine compatible with my existing project?

Yes. Open your project and continue working with AI assistance.

Is my code safe?

Privacy Mode is on by default. We never train on your code.

How good are AI-generated assets?

Great for prototyping and indie games. Learn the tradeoffs.

Can I make a game with just AI, no coding?

Yes. Describe what you want and Summer Engine writes the code.

How do I get support?

Founders respond personally. Discord, email, and more.

What You Can Do

Summer Engine brings AI directly into your game development workflow. Whether you want to describe a game in plain English or dive deep into engine code, Summer Engine adapts to you.

Scene Operations

Describe scene changes in plain English - “Add a player that can jump”

Project Intelligence

AI understands your entire project - code, scenes, assets, and relationships

Specialist Agents

Expert AI agents for 3D modeling, audio design, and complex systems

Asset Generation

Generate art, models, and audio - clearly labeled as AI-generated

For Pros and New Game Devs

Summer Engine is designed for everyone who wants to make games. It combines the ease of “vibe coding” with the power of a professional game engine.

For Creators & Vibe Coders

  • No code required: Build complete games just by describing them in plain English
  • Instant Assets: Generate 3D models, music, and sound effects on the fly
  • Learn as you go: Watch how Summer Engine builds things to learn game development naturally
  • Focus on fun: Skip the boilerplate and get straight to the gameplay

For Professional Developers

  • Ship commercial games: We shipped Don’t Pray on Steam in 2.5 months using Summer Engine
  • Full Engine Access: You have total control over every node and script
  • Code Quality: AI writes clean, structured GDScript that follows best practices
  • Accelerated Workflow: Handle tedious tasks instantly so you can focus on architecture and polish
Summer Engine removes boilerplate, accelerates iteration, and handles the hard parts, while giving you the option to dive as deep as you want. We integrate every new AI breakthrough (image, 3D, video models) within 24 hours of release.

Unified Workflow

One editor, one context. Design, code, and playtest without tab juggling.

Expert AI Agents

Bring in 3D or Audio AI specialists on demand. Deep help without leaving flow.

Safe AI Operations

Engine‑level edits with full undo. No surprise file rewrites.

Open Existing Projects

Open your projects as-is. Keep your plugins, docs, and muscle memory.

Ready to Build?

Download Summer Engine

Get started with the AI game engine today.

Need help or have questions? Reach out to our founders at founders@summerengine.com or join our community on Discord for fast responses.