Well I am playing the game and it looks like it is full of NFT's (cards, music, ...) and it gives rewards for several different coins not just STARBITS (the games main currency) and STARPRO (the games advanced and newest currency) but it also has special missions that you can earn GIFT, PIXEL, BATTLE, and other tokens that you can put into your wallet and sell or trade them as you see fit.
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From @cryptogamerz