When searching for "gta 5 highly compressed 10 gb work," you need to define what "work" means:
If your internet speed or storage is the issue, here are safer alternatives:
Downloading a "highly compressed 10 GB" version of Grand Theft Auto V (GTA 5)
To shrink a game safely, the compression must be "lossless," meaning no data is destroyed. Shrunk to 10 GB, a lossless extraction would fail because there is simply too much unique, un-deletable code required to run the game engine.
