While you cannot simply "generate" a code, you can occasionally get the full game for free through official promotions:
: Some users use verified apps like Snakzy to earn coins by completing surveys or mobile game milestones, which can then be redeemed for Steam gift cards to purchase the game legally. rockstar activation code free gta 5 verified
If the game is asking for a code you already purchased, you can find it here: How to Get GTA 5 for FREE in 2026 (LEGALLY) While you cannot simply "generate" a code, you