Reta Wars designed a special tokenomics for the sustainable Game-Fi ecosystem. Unlike conventional dual tokens, which are merely avoided from inflation, this maintains value through mutual interaction. It means that players make various play plans according to their budget and purpose. Some people will sell resources to get GRT, and others will buy resources to get more RETA. This is an entirely new approach to the sustainability of the Game-Fi ecosystem, in the same way as cross-border trade in the real economy.