OpenIV’s “mods” folder method (allowing replacement of game files without altering originals) worked flawlessly on 1.36. After update 1.53 (2020), Rockstar began obfuscating .rpf archives, making mod installation a headache.

In the ever-evolving world of Grand Theft Auto V, version numbers come and go. However, GTA 5 v1.0.877.1 (often referred to as Build 1.36) holds a special, almost legendary status among PC modders, offline enthusiasts, and preservationists. Released in December 2018 alongside the Arena War DLC, this version represents the “golden mean” of GTA V PC: it supports nearly all major Script Hook V mods, retains stable Online functionality (at the time), and predates the heavy encryption and anti-tamper measures that would later break modding for months.

If you’ve stumbled across file labels like Grand Theft Auto V v1.0.877.1 v1.36-Ultra-Repack or -ElAmigos, you are likely looking at a preserved copy of this pivotal build.

This article covers everything you need to know: technical changelogs, mod compatibility, how to identify genuine 1.36 files, and why this version remains a cornerstone of the GTA modding scene.

Even today, modders rip Arena War assets to use in single-player missions.