- Built for agents: one command connects your agent, and it drives the engine directly: it builds scenes, runs the game, reads errors and fixes them.
- Multiplayer built in: servers, matchmaking, parties, saves, leaderboards, chat and a store through the Summer SDK.
- Publish in one step: free to publish on Summer Games; your agent makes the store page and uploads the build.
- A full engine for full games: 2D and 3D, physics, animation and real code in C++, C# or scripts. Ship to desktop, mobile and the web.
- Your project is yours: plain project files you can read, edit and keep in Git.
- Privacy controls: Pro accounts can turn on Privacy Mode to keep their work out of training data.
Start here
Follow this path in order:1. Connect your AI agent
One command connects Claude Code, Codex, Cursor, Grok and many more.
2. Install Summer Engine
Download it for Mac or Windows, or let your agent install it.
3. Make your first game
Describe the game. Your agent builds it and you play it.
4. Make it multiplayer
Summer runs the servers. Your agent adds the online part.
5. Add what your game needs
Matchmaking, parties, saves, leaderboards, chat and a store.
6. Publish
Go live on summer.games. Your agent does the steps, you approve.
Other ways to start
How do I make a game with Summer Agent?
Describe your game in the Summer app. Summer Agent builds it while you watch.
How do I use the Summer Engine CLI and MCP?
CLI lets Claude Code, Cursor, Devin Desktop install and run Summer Engine. You chat in your IDE; the AI uses MCP tools.
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
Bringing an existing project?
Open the game you already have in Summer Engine and keep building it with AI.
How Do I Make Games with My IDE?
Add Summer Engine to Cursor, Claude Code, Devin Desktop, 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 Devin Desktop?
Add Summer Engine to Devin Desktop. 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, Devin Desktop, 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
Prepare an export with the templates and toolchains installed for your target. Store submission remains creator-controlled.
Knowledge Base
Common questions about Summer Engine:What is Summer Engine?
The AI game engine for people and agents.
Is Summer Engine compatible with my existing project?
Bring your project over: commit a copy, open it, check plugins and exports.
Is my code safe?
Privacy Mode is available on paid plans. When enabled, code is never stored by model providers or used for training.
How good are AI-generated assets?
3D models, characters, textures, sprites and audio, made to ship in your game.
Can I make a game with just AI, no coding?
Yes. Describe the game and your agent writes all the code.
How do I get support?
Founders respond personally. Discord, email, and more.
What You Can Do
Describe a whole game in plain words or go deep into engine code. Summer Engine does both.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 for everyone who makes games: describe a game in plain words, or take full control of a professional engine.For Creators & Vibe Coders
- Describe it, play it: tell your agent the game you want and play it minutes later
- Art and sound included: generate 3D models, characters, textures, sprites and audio in the engine
- Online from day one: multiplayer, saves and leaderboards without running a server
- 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: total control over every node and script, with native C++ and C# when you need it
- Clean code: your agent writes structured code you can read and own
- Faster everything: hand the tedious work to agents and spend your time on design and polish
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
Evaluate a committed copy of an existing project. Familiar formats and concepts reduce
migration work; verify imports, plugins, native extensions, and exports against the
current Summer Engine release.
Ready to Build?
Download Summer Engine
Get started with the AI game engine today
Browse 150+ Game Templates
Start from a template: shooter, RPG, platformer, horror, and more
Need help or have questions? Reach out to our founders at founders@summerengine.com or join our community on Discord for fast responses.