To qualified as currency, the 'value equivalent' needs backup from local government.
"Currency is a mandatory currency symbol."

No government acts as '游戏币，甚至于游戏装备's' backup. They don't care its acceptance in the real world, not to mention international exchange transaction.

Based on the upper description, we believe "游戏币，甚至于游戏装备" is not classified as financial asset or currency.  

Maybe in the future, they will be. However, they are not nowadays.