If you're interested in trying it yourself: install OpenIV, enable modding mode, back up your files, and start exploring the thousands of free .ym mods available online.
In short, "GTA V YM Game" is not an official game title or separate edition. Instead, it refers to custom modded content for Grand Theft Auto V that utilizes .ym files (specifically .ymap , .ydr , .ytd , .ybn ). The "YM" stands for "Rockstar YM" (Y- Magic), Rockstar Games’ proprietary file format used for storing 3D models, textures, map data, and collision meshes in their RAGE (Rockstar Advanced Game Engine). gta v ym game