io.github.moonolgerd/game-mcp

Game Discovery MCP Server

A Model Context Protocol (MCP) server that discovers and manages installed games on Windows PC from various platforms including Steam, Epic Games, GOG, Windows Store/Xbox, and other installed programs.

Features

• Multi-platform game discovery: Automatically scans for games from:
  • Steam (including custom library locations)
  • Epic Games Store
  • GOG (Good Old Games)
  • Xbox/Windows Store games
  • EA games
  • Ubisoft Connect games
  • Rockstar games
  • Battle.Net games
  • Other installed programs (via Windows registry)
• Comprehensive game information: Provides details including:
  • Game name and platform
  • Installation path and executable location
  • Installation date and size
  • Platform-specific metadata
• MCP Tools Available:
  • discover_games: Finds all installed games across all platforms
  • get_game_info: Gets detailed information about a specific game
  • launch_game: Launches a game by name (if executable is found)

Prerequisites

• .NET 10.0 or later
• Windows operating system

Usage with VS Code

{
  "servers": {
    "GameMcpServer": {
      "type": "stdio",
      "command": "dnx",
      "args": [
        "GameMcpServer@1.0.8",
        "--yes"
      ]
    }
  }
}

Available Tools

discover_games

Discovers all installed games from all supported platforms.

Example usage in Claude: "Can you discover all the games I have installed on my PC?"

Returns: JSON object with:

• Total game count
• Games grouped by platform
• Detailed list of all games with metadata

get_game_info

Gets detailed information about a specific game by name.

Parameters:

• gameName: The name of the game to search for

Example usage: "Get information about Cyberpunk 2077"

launch_game

Launches a game by name if it has a valid executable path.

Parameters:

• gameName: The exact name of the game to launch

Example usage: "Launch Steam's Half-Life 2"

How It Works

The server uses multiple discovery methods:

1. Steam Games:
   • Reads Steam installation path from registry
   • Parses libraryfolders.vdf for custom library locations
   • Scans steamapps/common directories for game folders
2. Epic Games:
   • Reads game manifests from %ProgramData%/Epic/EpicGamesLauncher/Data/Manifests
   • Parses JSON manifest files for game information
3. GOG Games:
   • Queries Windows registry under SOFTWARE\GOG.com\Games
   • Extracts game paths and executable information
4. Xbox/Windows Store:
   • Scans %ProgramFiles%/WindowsApps directory
   • Parses AppxManifest.xml files for application information
   • Filters for gaming applications
5. Registry Programs:
   • Scans Windows uninstall registry entries
   • Uses heuristics to identify game-like applications
   • Filters out system utilities and non-gaming software

Error Handling

The server is designed to be robust and continue functioning even if:

• Some platforms are not installed
• Registry keys are inaccessible
• Directories have permission restrictions
• Individual games have corrupted metadata

Errors are logged to stderr and don't interrupt the discovery process for other platforms.

Security Considerations

• The server only reads system information and doesn't modify anything
• Game launching requires explicit user confirmation through the MCP client
• All file system access is read-only except for launching executables
• Registry access is read-only

Development

This project uses:

• .NET 10.0
• Model Context Protocol SDK for .NET
• Microsoft.Extensions.Hosting for application lifecycle