There are some points rewards websites, such as PointsPrizes, which may reward users with points for completing surveys and other offers. Once you’ve accumulated enough points they will send you a prize such as a free PaySafeCard or PayPal money, which you can then use to buy V-Bucks.
This option may provide an alternative – particularly if you absolutely don’t have enough money to purchase Save The World.
These are established sites with a proven income source and therefore do offer genuine opportunities. However, it can take some time to earn enough points.