you need to allow users to withdraw their tokens so that they can trade them on the exchange, earn money on trading and make deposits without spending their real funds, I have 2600 coins, if I withdraw them I can earn at least 100 trx on the exchange, per transaction, Therefore, I will have more funds for the game and you will get more profit.If you do not give freedom and just buy it yourself, it will be a mistake, since it makes no sense for people on the exchange to buy your token and trade it, since there will be no freedom of currency circulation.Giving people to withdraw BFGs and dispose of them on their own, they themselves will begin to attract others players telling how you can make money on trading and play for free .