It looks like the CryptoBattles project has started a few years ago, the first tweet on the CryptoBattles twitter account was in 2018, Has the developer continued to develop the game in recent years or has the project stalled for a while?
It seems to me, the idea is found in 2018, then as I see in their twitter account, they give the first name is Crypto Wars and going alive until 2020, then looks like they rebrand the project again and become CryptoBattles. I found one link
https://game.cryptowars-ou.com/Their tweet about Crypto Wars
https://twitter.com/CryptoWarsOU/status/1316693712941056000 and even, if you can see their twitter username is still "CryptoWarsOU"