The idea of downloading highly compressed in 10MB is essentially a myth and is almost universally considered fake or malicious

: A fundamental rethinking of game design principles to accommodate extreme data efficiency.

Every single file that claims this size is a virus, a miner, or a ransomware dropper. You will not play as Michael, Franklin, or Trevor. Instead, you will spend your afternoon running antivirus scans, wiping your hard drive, or worse—explaining to your bank why someone in another country bought $500 worth of gift cards using your saved payment info.