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Summer Engine MCP guide

# How to make games in Cline with Summer Engine

Set up Cline with Summer Engine MCP so it can build playable games inside the Summer Engine desktop app. Summer Engine is the desktop game engine; Cline is the agent that drives it through MCP.

$ npx -y summer-engine@latest setup cline --yes

Cline writes the code with your subscription. Summer Engine shows the game.

01

## Summer is free for MCP use

Download the desktop engine and connect it to your agent. You are not paying Summer for the AI calls your existing subscription already covers.

02

## Open Cline

Use the AI editor you already have. The setup command writes the MCP config and installs the Summer game-dev skills.

03

## Run a Summer game

The agent writes code. Summer Engine shows the Summer game, runs Play mode, and helps inspect errors. Export still requires the target templates and toolchains.

Install

## Connect Summer to Cline

1. 1  
### Install Summer Engine  
Downloads the desktop engine app, about 1 GB. Skip it if Summer Engine is already installed, or if you only need assets and video for a game built in another engine.  
$ npx -y summer-engine@latest install
2. 2  
### Sign in  
Opens your browser once. The CLI and the engine share the session.  
$ npx -y summer-engine@latest login
3. 3  
### Connect Cline  
Writes the summer-engine MCP config and installs the Summer game-dev skills.  
$ npx -y summer-engine@latest setup cline --yes
4. 4  
### Restart and build  
Restart VS Code so Cline reloads its MCP config.

Setup notes

## The 2026 specifics.

### Running Cline on a local model?

Cline works with LM Studio and Ollama, but its "compact prompt" option for local models disables MCP entirely. Keep the full system prompt on, raise the model context to 32k or higher, and use a 24 GB-class GPU for reliable tool calls.

Why this matters

## Cline writes with your subscription. Summer Engine shows the game.

A chat agent alone can write files. With MCP, Cline gets tools for the running game engine, so it can inspect the project, run commands, and make changes that become playable inside Summer.

Other setup guides

## Start with Cline. Build inside Summer.

Install the desktop app for free, run the setup command, and make your first scene playable.

[Download](https://www.summerengine.com/download)

[Docs ](https://docs.summerengine.com/mcp/overview)

Source: https://www.summerengine.com/mcp/how-to-make-games-in-cline

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## Machine-readable resources

- Site index for agents: https://www.summerengine.com/llms.txt
- Full inlined content: https://www.summerengine.com/llms-full.txt
- Porting catalog: https://www.summerengine.com/llms-porting.txt
- Structured catalog: https://www.summerengine.com/agent-catalog.json
- Sitemap: https://www.summerengine.com/sitemap.xml
- Developer resources: https://www.summerengine.com/docs