There are a few ways to get Grand Theft Auto 5 for free on PlayStation 4. The first way is to purchase the game from the PlayStation Store. The second way is to download it from the PlayStation Network. The third way is to use a code that you receive in-game. The fourth and final way is to buy it from the online store. The first two ways are the easiest and most common ways to get Grand Theft Auto 5 for free on PlayStation 4. The third and fourth methods are more difficult but can also be done if you have enough patience. The fifth and final way to get Grand Theft Auto 5 for free on PlayStation 4 is by buying it from the online store.