01
Build your game in Summer Engine.
Summer AI lives in the desktop app. Make the assets in Summer Studio.
The AI Game Engine
Build real 2D and 3D games, publish them on Summer Games, Steam or your own site, then track, grow and earn from them, all in one place.
In-engine recording
In-engine recording
Build it. Launch it. Grow it.
Create your game in Summer Engine with AI, or by connecting MCP. Make any asset you need in Summer Studio. Release it on Summer Games, Steam, itch.io, or wherever you want. You own your game.
02
Launch it on Summer Games, Steam or itch.io.
Share an early build, playtest with friends, and publish when you are ready.
03
Grow your game with playtests and player feedback.
Watch how people play, set your price, and plan the next update.
Features
#1 Assets
Make 2D and 3D
Models, video, sound effects, music, dialogue, and cutscenes. The frontier models are in Summer Studio.
#2 AI
Use our AI, or yours
Chat with the AI in the engine. Or connect MCP and keep the agent you already use. MCP is free.
#3 Multiplayer
Add multiplayer
Deploy multiplayer, hook up networking, and read the skills. You can ship a full multiplayer game.
#4 Store
Publish on Summer Games
Our own store for games made with Summer. Steam and itch.io work too.
#5 Analytics
Track your players
Add events to what you want to measure and see how the game performs.
#6 Platforms
Ship on all platforms
Windows, Mac, iOS, Android and the web, all from Summer.
Discover templates
Start your next game with a template
Also supports MCP
Already use Claude Code, Codex, or Cursor?
You can also use the engine for free with our MCP and CLI. Hook it up and keep the agent you already have.
Explore MCP setupBring 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.