🎮 SteamRoll

SteamRoll is a tool designed for households to easily share and play their Steam libraries across local computers without the restrictions of Steam Family Sharing or requiring multiple accounts to be online.

It creates portable, LAN-ready game packages by automatically applying compatibility layers (Goldberg Emulator / CreamAPI) and provides a high-speed peer-to-peer transfer system to move games between PCs.

✨ Features

📦 Automated Packaging

• One-Click Conversion: Automatically converts installed Steam games into portable, DRM-free folders.
• Smart Emulation:
  • Goldberg Emulator: Automatically downloads and applies the Goldberg Emulator to bypass Steam DRM for offline/LAN play.
  • CreamAPI Support: Optional support for unlocking DLC content while maintaining Steam integration.
  • Interface Detection: Scans game files to detect and configure necessary Steam interfaces.
• Game-Specific Logic:
  • Source Engine Support: Special handling for Source engine games (e.g., Half-Life 2 mods) to correctly configure gameinfo.txt and launch arguments.
  • Launcher Generation:
    • Windows: Creates custom LAUNCH.bat scripts for easy one-click play.
    • Linux / Steam Deck: Generates launch.sh scripts that handle Wine detection, path conversion, and LD_LIBRARY_PATH configuration.
  • Dependency Scripting: Automatically detects redistributables (DirectX, VC++, PhysX) and generates an install_deps.bat for silent installation.
• Rich Metadata: Fetches game details (descriptions, release dates, ratings) from the Steam Store and generates a detailed README.txt and machine-readable steamroll.json for every package.
• Resumable Packaging: If a packaging operation is interrupted, SteamRoll can detect the partial state and resume from the last completed step (Copying, Interface Detection, etc.).

🚀 Advanced LAN Transfer

• Zero-Config Discovery: Automatically finds other SteamRoll clients on your local network via UDP broadcast (Port 27050).
• Smart Sync (Differential Transfer): Uses a file-level transfer protocol to analyze the destination folder before sending. It intelligently skips files that match in size and hash, making it perfect for resuming interrupted transfers or pushing small game updates without re-sending the whole game.
• Resumable Transfers: Transfers can be paused or interrupted and resumed later. State is tracked via .steamroll_transfer_state to ensure seamless continuation.
• Smart Hashing: Intelligently uses existing package metadata to skip re-hashing unchanged files on the source, ensuring instant transfer initialization for large games.
• Compression: Optional GZip compression (negotiated via STEAMROLL_TRANSFER_V2 protocol) to reduce bandwidth usage during transfers.
• Integrity Verification: Uses SHA-256 hashing to ensure every file is transferred correctly and matches the source.
• Remote Library Browsing: Browse the library of other SteamRoll peers on your network and request "Pull" transfers directly from their machine.
• Repair from Peer: Verify local game files against a peer's copy and download only the missing or corrupt files to repair a broken package.
• Network Speed Test: Built-in tool to measure raw transfer throughput between peers.
• Bandwidth Control: Configurable transfer speed limits to prevent network saturation.

⚡ Batch Operations

• Batch Packaging: Select multiple games in the library and package them sequentially in one go.
• Batch Transfer: Select multiple packaged games and send them all to a peer in a single operation.

🛠️ Management & Safety

• Library Scanning: Automatically detects games across multiple Steam library folders with caching for performance.
• Health Checks & Diagnostics:
  • Diagnostics: Analyzes packages for issues like architecture mismatches (32-bit vs 64-bit DLLs), missing Steam API files, or junk files (Redistributables).
  • Library Cleanup: Scans for and removes orphaned files that don't belong to any valid package to reclaim disk space.
• Save Game Synchronization:
  • Backup & Restore: Built-in tools to back up and restore game saves to/from ZIP files.
  • P2P Sync: Directly synchronize save games with a peer over the network without intermediate file steps.
• Package Import: Easily ingest external SteamRoll packages (ZIPs) via drag-and-drop or the Import button.
• Update System: Checks for updates to both the SteamRoll application and the Goldberg Emulator (supports GitHub fork for newer Steam SDKs).
• Security:
  • Defender Exclusion Helper: An optional utility to safely add Windows Defender exclusions for SteamRoll folders to prevent false positives.
  • Path Validation: Strict security checks during transfers to prevent directory traversal attacks.
• Isolated Environment: SteamRoll works in its own output directory and does not modify your actual Steam installation.

🚀 How to Use

1. Preparation

Run SteamRoll on the computer where the games are installed. It will automatically detect your Steam library.

2. Create a Package

1. Select a game from the "Library" view.
2. Click the Create Package button.
3. SteamRoll will:
   • Copy game files to the staging area.
   • Apply the selected emulator (Goldberg/CreamAPI).
   • Configure DLC and generate launchers for Windows and Linux.
   • Create metadata and dependency installers.

3. Transfer to Another PC

Option A: Direct LAN Transfer (Recommended)

1. Open SteamRoll on the destination PC. It will automatically start listening.
2. On the source PC, go to the "Packages" view.
3. Right-click the packaged game and select Send to Peer.
4. Select the destination PC from the list.
5. On the destination PC, accept the incoming transfer request.

Option B: Manual Copy

1. Click Open Folder to view the package.
2. Copy the folder to a USB drive or network share.
3. Paste it onto the target PC.

4. Play!

On the target PC, open the game folder:

• Windows: Run LAUNCH.bat.
• Linux / Steam Deck: Run launch.sh (ensure Wine is installed if running Windows executables).

⌨️ Keyboard Shortcuts

• Ctrl + F: Focus Search Box
• Ctrl + R: Refresh Library
• Ctrl + S: Open Settings
• Esc: Cancel current operation

⚙️ Technical Details

• Ports:
  • TCP 27051: File transfer
  • UDP 27050: Peer discovery
• Configuration: Settings are stored in %LocalAppData%/SteamRoll/settings.json.
• Goldberg Path: Emulator files are managed in %LocalAppData%/SteamRoll/Goldberg.
• Metadata: Each package contains a steamroll.json file with build info, emulator version, and SHA-256 file hashes for integrity checks.
• Dependencies: The generated install_deps.bat script can silently install common redistributables found in the game folder (e.g., _CommonRedist).

System Requirements

• OS: Windows 10/11 (64-bit)
• Runtime: .NET 8.0 Desktop Runtime
• Steam: Installed on the source machine (not required on target).

⚠️ Disclaimer

SteamRoll is for personal, local use only. Please respect game developers. Only use this tool to play games you legally own on your own local network. Do not use this tool to distribute pirated copies of games.