: part2.rar cannot be used on its own. It contains a middle chunk of the overall game data, missing both the file headers (usually in part 1) and the closing directory structures.

multiplayer working on a non-Steam (noSteam) version. This topic is actually a bit complex because official multiplayer support for was removed in the 2020 "Complete Edition" update. Steam Community

and Microsoft retired Games for Windows Live (GFWL), players often turn to these third-party files and community-driven platforms to keep the online experience alive. Key Features of GTA IV Multiplayer

: Dozens of iconic tracks were removed from the in-game radio stations.

To play multiplayer using non-Steam setups or "NoSteam" files (like the multi-part .rar archives you mentioned), you typically need to use a third-party client since official multiplayer was removed from the "Complete Edition". 1. Extract Your Game Files

This particular mod can be found on GTAinside.com and represents a different approach to enabling multiplayer. It is a custom network code implementation designed to allow players to host and join servers without relying on any official services or other mod frameworks. It was released long after the game's prime, and while it worked for some, its player base and support are minimal compared to the more active GTA Connected community.

: Open the client, go to Tools > Game Settings , and browse to find your GTAIV.exe in the folder you just extracted.

: First, make sure you have a legitimate copy of GTA IV. If you're looking to play without Steam, you might have a physical copy or a version downloaded from another platform.

If the RAR file contains an unknown .exe or .bat file without a clear community reputation, do not run it.