ReFix v1.1.0 — Universal OnlineFix Alternative, Steam Emulator & LAN Multiplayer Fix

ReFix is a high-performance, modular C++ DLL proxy, runtime Steamworks emulator, universal DLC unlocker, and multiplayer fix suite for PC games. Built as an open-source alternative to OnlineFix (online-fix.me), Goldberg Emulator, CODEX, and SmartSteamEmu, ReFix enables seamless online co-op / multiplayer via Steam (Spacewar 480) or 100% offline local area network (LAN) play without requiring the Steam client.

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🔍 Steam Emulators & Multiplayer Fixes Comparison Matrix

Feature	ReFix v1.1.0	OnlineFix (online-fix.me)	Goldberg Emulator (gbe_fork)	CODEX Steam Emu	SmartSteamEmu (SSE)
Open Source (Full C++ Source)	✅ Yes (MIT)	❌ Closed / Obfuscated	✅ Yes (GPL/MIT)	❌ Closed Source	❌ Closed / Discontinued
Steam Online Matchmaking (Spacewar 480)	✅ Yes	✅ Yes	❌ No (LAN only)	❌ No (Offline only)	❌ No (LAN only)
100% Offline LAN Play (No Steam Required)	✅ Yes (gbe_fork)	❌ No	✅ Yes	⚠️ Offline solo	✅ Yes (Legacy LAN)
Universal DLC Auto-Unlocker	✅ Yes (SmokeAPI/CreamAPI)	⚠️ Manual / Partial	⚠️ Config file only	⚠️ INI list only	⚠️ INI list only
Interactive GUI Executable Picker	✅ Yes (select_exe.ps1)	❌ No	❌ No	❌ No	❌ No
Smart Multi-Engine Detection (Unity/Unreal/Godot/Native)	✅ Yes (Automated)	❌ No	❌ No	❌ No	❌ No
Epic Online Services (EOS / Redbone) Proxy	✅ Yes (Built-in)	⚠️ Custom patches	❌ No	❌ No	❌ No
Automatic Windows Defender Firewall Config	✅ Yes	❌ No	❌ No	❌ No	❌ No
Steam Non-Steam Shortcut Injector	✅ Yes (shortcuts.vdf)	❌ No	❌ No	❌ No	❌ No
Clean Zero-Trace Uninstaller & Game Restorer	✅ Yes (1-Click)	❌ No	❌ No	❌ No	❌ No

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🌟 Key Features & Architecture

1. Dual Connectivity Modes

• Mode 1 — ReFix Online via Steam (Spacewar 480):
  • Hooks into official Steam client via AppID 480 masking.
  • Enables online matchmaking, Steam lobbies, P2P networking, and Steam Overlay (Shift+Tab) through official Steam infrastructure.
  • Injects real game AppID into lobby metadata for worldwide lobby filtering and cross-player matchmaking.
• Mode 2 — Re:Goldberg LAN without Steam (Offline / gbe_fork):
  • 100% autonomous local emulation powered by the modern gbe_fork / Goldberg Emulator backend.
  • Zero Steam installation or client dependency required.
  • Local subnet UDP broadcast discovery (default port 47584), custom broadcast IP lists, persistent machine-unique SteamID64 identities, and portable save directory (saves/).

2. Universal DLC Unlocker (BLUESTAR Engine)

• Powered by lightweight SmokeAPI & CreamAPI hooks.
• Three Unlock Modes:
  • Unlock ALL: Universal auto-unlock with Steam Store catalog caching.
  • Unlock NONE: Locks all DLCs for base-game parity testing.
  • Custom Selection: Interactive Steam Store API querying with real-time DLC titles, comma-separated index selection, ranges (e.g. 1-5), or direct AppID inputs.
• Automatic generation of cream_api.ini and SmokeAPI.config.json.
• Non-destructive: Creates and manages original backups (steam_api64_o.dll / steam_api_o.dll).

3. Smart Multi-Engine Detection & Executable Selection

• Automatically inspects target directories for engine signatures:
  • Unity: *_Data/Managed/, UnityPlayer.dll, BepInEx loader integration.
  • Unreal Engine 4/5: Binaries/Win64/, EOSSDK-Win64-Shipping.dll, RedboneEOS.dll.
  • Godot 3/4: *.pck project packages, GodotSteam / SteamMultiplayerPeer.
  • Native C/C++: Custom engines (e.g. Don't Starve Together, Source engine titles).
• Smart Binary Scoring: Automatically filters out dedicated servers, crash handlers, nullrenderers, and helper tools (*dedicated*, *nullrenderer*, *server*), prioritizing main client 64-bit binaries.
• Interactive Executable Picker: Allows confirming the detected executable, choosing via native Windows File Explorer GUI dialog (select_exe.ps1), or entering custom paths.

4. Automatic Network & Firewall Configuration

• Embedded PowerShell and UAC helpers automatically configure Windows Defender Firewall rules for TCP/UDP game traffic and UDP LAN discovery ports.
• Generates a portable Configure_LAN_Firewall.bat helper in game root for plug-and-play USB / flash drive portability.

5. Steam Non-Steam Game Shortcut Auto-Installer

• Seamlessly injects the patched game into Steam's binary shortcuts.vdf for all local Steam user profiles.
• Reloads Steam automatically to enable Steam Overlay, Steam Input controller mapping, and Remote Play.

6. Universal Uninstaller & Restorer

• One-click rollback (Uninstall_ReFix.bat) that restores original backup DLLs (.orig, _valve.dll, _o.dll), restores SteamStub protected exes, and cleans up proxies, emulators, and temp caches without leaving residue.

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📂 Project Structure

ReFix/
├── AutoDeploy.bat                      # Main Universal AutoDeploy batch tool (v1.1.0)
├── DLC_Unlocker.bat                    # Universal DLC Unlocker tool (v1.1.0)
├── Uninstall_ReFix.bat                 # Zero-trace uninstaller & game restorer
├── build.bat                           # MSVC build script for C++ proxies
├── deploy.bat                          # Automated packaging & deployment script
├── ReFix.ini                           # Unified configuration template
├── README.md                           # Comprehensive documentation & SEO guide
├── bin/                                # Deployment binaries & helper modules
│   ├── steam_api64.dll                 # ReFix Steam proxy DLL (x64)
│   ├── winmm.dll                       # ReFix winmm startup proxy loader
│   ├── EOSSDK-Win64-Shipping.dll       # EOS authentication proxy
│   ├── RedboneEOS.dll                  # Redpoint EOS bridge proxy
│   ├── ReFixSync.dll                   # Synchronization helper
│   ├── detect_game.ps1                 # Engine & executable analyzer
│   ├── deploy_helper.ps1               # Deployment engine & config synchronizer
│   ├── select_dlcs.ps1                 # Steam Store API DLC catalog scraper
│   ├── dlc_unlocker.ps1                # SmokeAPI/CreamAPI deployment manager
│   ├── select_folder.ps1               # GUI folder selection dialog
│   ├── select_exe.ps1                  # GUI executable selection dialog
│   ├── apply_firewall.ps1              # Windows Firewall rule automator
│   ├── add_steam_shortcut.ps1          # Steam shortcuts.vdf binary injector
│   ├── Install_ReFix_Steam_Shortcut.bat # Steam shortcut batch helper
│   ├── goldberg/                       # Goldberg emulator binaries & tools
│   ├── bepinex/                        # BepInEx runtime loader
│   └── tools/                          # SmokeAPI & Steamless unpacking utilities
└── src/                                # C++ Proxy source code
    ├── winmm_proxy.cpp                 # winmm.dll loader & hooking entry point
    ├── steam_proxy.cpp                 # steam_api64.dll export proxy & wrapper
    ├── eos_proxy.cpp                   # EOSSDK authentication & session emulator
    ├── unreal_detect.cpp               # Unreal Engine subsystem hooks
    ├── unreal_steam_emu.cpp            # Unreal Engine Steam adapter
    ├── upnp_firewall.cpp               # UPnP & firewall automation routines
    ├── server_browser_gui.cpp          # In-game ImGui server browser
    ├── include/                        # Steamworks SDK headers
    └── minhook/                        # MinHook hooking library

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🚀 Quick Start Guide

For Players (Deployment Package)

1. Download the latest ReFix_Release_v1.1.zip from Releases.
2. Extract the archive to any folder (or directly to a USB flash drive).
3. Run AutoDeploy.bat:
   • Choose your target game directory using the GUI dialog or enter the path.
   • Confirm or choose the executable (.exe).
   • Select your connectivity mode:
     • [1] ReFix Online via Steam: Online multiplayer with friends via Steam.
     • [2] Re:Goldberg LAN without Steam: Local LAN multiplayer without Steam running.
   • Choose your DLC preference ([1] All, [2] None, [3] Custom).
   • Launch your game and play!

For DLC Unlocking Only

1. Run DLC_Unlocker.bat.
2. Select your game folder.
3. Choose [1] Unlock ALL DLCs, [2] Choose specific DLCs, or [3] Unlock NO DLCs.
4. The tool automatically configures SmokeAPI/CreamAPI and creates non-destructive backups.

Restoring to Original Clean State

1. Run Uninstall_ReFix.bat.
2. Select your game folder.
3. All original files (.orig, _valve.dll, _o.dll, .steamstub.exe) are restored and all proxies/emulators are removed.

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⚙️ Configuration Reference (ReFix.ini)

[Game]
GameName=GenericGame            ; Descriptive game title
EngineType=Auto                 ; Auto | Unity | Unreal | Godot | Native

[Online]
Mode=goldberg                   ; valve (Steam Online 480) | goldberg (LAN Offline)

[Steam]
MaskAppId=480                   ; Steam AppID used for masking (Spacewar 480)
RealAppId=550                   ; Real Steam AppID for DLCs and metadata
Language=english                ; Game language
BypassLicenseCheck=true         ; Allow running without Steam license ownership
DLCs=all                        ; all | none | comma-separated AppIDs

[Matchmaking]
EnableLobbyFilter=false         ; Filter lobbies by custom key
LobbyFilterKey=game_filter      ; Metadata key for game filtering
LobbyFilterValue=               ; Filter value (auto uses RealAppId if empty)
LobbyDistanceFilter=Worldwide   ; Close | Default | Far | Worldwide
MaxLobbyResults=50              ; Max lobbies returned

[ServerBrowser]
OverrideServerListAppId=false
ServerListAppId=480
Language=english

[Overlay]
EnableOverlay=true              ; Enable Steam Overlay hook
OverlayAppId=480

[EOS]
DeviceIdAuth=true               ; Emulate Epic Online Services DeviceID login

[User]
Name=Player                     ; Custom player name (or empty for auto-generated)
SteamId=                        ; Custom SteamID64 (or empty for auto-generated)

[Network]
ListenPort=47584                ; UDP port for LAN discovery
CustomBroadcasts=               ; Additional broadcast IPs (comma-separated)
PublicIP=                       ; Custom public IP for WAN relay
LocalIP=

[P2P]
EnableWAN=true                  ; Enable WAN NAT traversal
P2PPort=7777                    ; UDP P2P listening port
AllowRelay=true                 ; Allow relay servers if direct P2P fails
ForcePublicIPInLobby=true

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🛠️ Building from Source

Prerequisites

• Windows 10 / 11 (64-bit)
• Visual Studio 2022 (Community, Professional, Enterprise, or Build Tools) with the Desktop development with C++ workload enabled (includes MSVC v143 toolset + MASM ml64.exe).

1-Click Build

Open Developer Command Prompt for VS 2022 (x64) or standard Windows Command Prompt / PowerShell and execute:

cd ReFix
build.bat

build.bat automatically:

1. Locates the MSVC environment using vswhere.exe or standard Visual Studio installation directories.
2. Assembles x64 forwarding assembly tables (winmm_fwd.asm, eos_fwd.asm, steam_fwd.asm) via ml64.exe.
3. Compiles winmm.dll, EOSSDK-Win64-Shipping.dll, RedboneEOS.dll, and steam_api64.dll with high optimizations (/O2 /EHsc /LD).
4. Outputs the compiled proxies to build/ and automatically synchronizes them to bin/.

Packaging the Standalone Release

To package a clean deployment distribution:

deploy.bat

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📄 References, Credits & Related Projects

ReFix stands on the shoulders of giants. We express our deepest gratitude to the creators and maintainers of the following open-source projects and emulation tools:

• Goldberg Emulator (Original) by Mr_Goldberg — The foundation for open-source Steamworks emulation.
• gbe_fork (Goldberg Emulator Community Fork) by Detanup01 & contributors — Modern Goldberg fork providing enhanced lobby broadcast, interface generation, and extended API support.
• SmokeAPI by acidicoala — Fast and modern universal Steam DLC unlocker backend.
• CreamAPI by acidicoala — Legendary Steam DLC unlocker architecture and INI configuration standard.
• Mono.Cecil by Jb Evain — Assembly inspection and IL patching library.
• MinHook by Tsuda Kageyu — The Minimalistic x86/x64 API Hooking Library for Windows.
• Dear ImGui by Omar Cornut — Bloat-free graphical user interface library for C++.
• Steamless by atom0s — DRM unpacker for SteamStub variants.

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🏷️ Search Keywords & Tags (SEO)

online-fix onlinefix online-fix-me steam-emulator steam-emu steam-crack goldberg-emulator goldberg-lan codex-steam-emulator smartsteamemu creamapi smokeapi dlc-unlocker steam-multiplayer-fix pirated-games-multiplayer spacewar-crack spacewar-480 lan-multiplayer-fix coop-game-crack steam-api64-proxy unreal-engine-multiplayer-fix unity-multiplayer-fix godotsteam-fix steam-overlay-fix steam-keygen-bypass free-steam-multiplayer onlinefix-alternative game-crack-multiplayer

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⚖️ License

Distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License.

• Modify & Collaborate: You are free to adapt, remix, transform, build upon, and share the code.
• Non-Commercial: You may not use the material or software for commercial purposes or sell it.
• ShareAlike: Contributions and derivatives must be distributed under the same license terms.

See LICENSE for more information.