01
Build your game in Summer.
Scenes, code, art and sound, in a real engine you can open, edit and ship. Make the assets in Summer Studio.
The AI Game Engine
Make real 2D and 3D games with the Summer agent or your own. Then launch them, learn from them and make them successful, all in one place.
In-engine recording
In-engine recording
Trusted by people from
Build it. Launch it. Grow it.
We want to build the best place to have fun and make and play games with people and agents. Make it in Summer, launch it wherever you want, and learn from your players. You own your game.
02
Launch it on Summer Games, Steam, itch.io or as a standalone mobile game.
Share an early build, playtest with friends, and publish when you are ready.
03
Learn from your players and make the game better.
Watch how people play, set your price, and plan the next update.
It's all here
#1 Assets
175,000+ free assets
Models, textures, sounds and more that you can just use. When you need something new, make it with the frontier models in Summer Studio.
#2 AI
Our AI, or yours
The editor has a built-in AI with all the Summer tools. Bring Claude Code, Codex, Hermes or whatever agent you prefer, and it gets the same tools.
#3 Multiplayer
Multiplayer that just works
Make it multiplayer with our building blocks and launch. Summer runs the servers, matchmaking, parties and player saves.
#4 Publishing
Publish hands-free
Your agent runs the whole publishing flow on Summer Games through the MCP or CLI. You say yes, our automated checks pass, and the game is live.
#5 Analytics
Analytics for games
Track everything in your game. Any agent can read your game's analytics through the MCP, so you learn from players and make the game better.
#6 Platforms
Every platform
Make games for Windows, Mac, Linux, iOS, Android and the web. PlayStation and Xbox take some more custom work.
Discover templates
Start your next game with a template
MCP and CLI
Everything in Summer, from your own agent.
The Summer MCP and CLI let your agent reach all of it: the engine, assets, publishing and analytics. Both are free and open source.
Set up the MCPBring your imagination to life.
Describe the game you want and Summer builds it with you in a full engine: 2D and 3D, physics, animation and real gameplay. Play it, change anything, and keep going.
Natural Language Scene Construction
Auto-configured Physics & Collisions
One-click Character Controller setup
Become orders of magnitude more productive.
A full engine for real games, built for people and agents. Use native C++ and C# when you want full control, and let your agent handle the rest.
Native C++ and C#
Game-dev skills and playbooks
Local testing and documented export steps
Real user quote
Real builders are getting unstuck
"I have a full time job and a 3 month old, so my programming time is work breaks and the occasional half hour here and there. This tool has made game making so much more accessible to me."
BJ Games
Indie developer
"I have wanted to make games since I was 10 and tried hundreds of times. I discovered this engine today, and I have been having a blast. I can finally do whatever comes to my mind and just focus on music and art."
YakootEL
Composer and game maker
"I am a QA automation engineer by day. This is the tool I have been looking for. I spent some time with Unity AI, but it is too expensive, and local LLMs with MCP get confused."
Deulde
QA automation engineer
Frequently Asked Questions
Try Summer now.
No credit card required. macOS and Windows available.