Summer
Build, test, publish, and manage full multiplayer games and game assets using AI coding agents.
Summer is a game engine and toolchain tailored for AI agents, connecting coding assistants like Claude, Cursor, and Codex directly to a full-featured game development workflow. Through a combination of an MCP server, CLI, and specialized game-dev skills, agents can assemble scenes, write gameplay logic, trigger in-engine testing, and generate production-ready 2D, 3D, and audio assets. Beyond local development, Summer integrates networking, analytics, multiplayer infrastructure, and one-click publishing to the summer.games platform while giving developers granular permission controls over agent actions.
Key Features
01Drives the Summer Engine editor directly via MCP tools to build scenes, write scripts, and capture screenshots
02Generates game assets in the cloud, including 3D models, textures, sound effects, voiceovers, and music
03Equips AI agents with game development skills covering combat, movement, physics, VFX, UI, and level design
04Provides built-in multiplayer infrastructure supporting matchmaking, leaderboards, parties, and world saves
05Automates game publishing to summer.games with built-in analytics, A/B testing, and pre-release safety checks
06102 GitHub stars
Use Cases
01Empowering AI agents in tools like Claude Code or Cursor to autonomously build, test, and iterate on 3D or 2D games
02Generating multi-modal game assets such as GLB models, sound effects, and background music directly into a project directory
03Publishing multiplayer web-compatible games with out-of-the-box matchmaking, analytics tracking, and store page configuration