This game was officially released on March 19 after changing its name.
The official name is "BitNyanters".
When you play the game, you will get a token called "Necoin".
This token can be exchanged for a virtual currency called "ArukuCoin".
Now it is the currency in the game, but if this coin is listed in the future, there is a possibility that it can be redeemed like BitCoin.
Information from Japan.