Historically, platforms like Epic Games have given GTA V away for free during special promotional periods. It is worth keeping an eye on their "Free Games" section for future events.
Occasionally, Rockstar Games offers free items or access within the world of GTA Online. For example, they recently offered a free car to all players who claimed it during a specific week. Why the PC Version Stands Out gta-5-pc-game-free-download
The PC version is famous for its mods. Sites like GTA5-mods.com allow you to add everything from realistic cars to superhero powers. Historically, platforms like Epic Games have given GTA