OpenSteamTool

OpenSteamTool is a Windows DLL project built with CMake.

Feature

Core Unlocks

• Unlock an unlimited number of unowned games.
• Unlock all DLCs for unowned games.
• Support auto load depot decryption keys from Lua config, no need to manually input them in config.vdf anymore.
• Support auto manifest download thanks to RoGoing's manifest API (https://manifest.steam.run/).

Future

• Enable stats and achievements for unowned games.
• Bypass Steam Families sharing restrictions.
• Compatible with games protected by Denuvo and SteamStub.
• Steam Cloud synchronization support.

Usage

1. Run build.bat from the project root to build the project.
2. Copy generated dwmapi.dll and OpenSteamTool.dll to the Steam root directory.
3. Create Lua directory (for example C:\steam\config\lua) and place Lua scripts there. The DLL will automatically load and execute them.
4. Lua example:

addappid(123456) -- unlock game with appid 123456
addappid(123456, 0,"111111") -- unlock game with appid 123456 depotKey is "111111" 

Build

Requirements

• Windows 10/11
• CMake 3.20+
• Visual Studio 2022 with MSVC (x64 toolchain)

Quick build

build.bat

Output

• Debug: build/Debug/OpenSteamTool.dll and build/Debug/dwmapi.dll
• Release: build/Release/OpenSteamTool.dll and build/Release/dwmapi.dll

Disclaimer

This project is provided for research and educational purposes only. You are responsible for complying with local laws, platform terms of service, and software licenses.