It's a tradeable card game online through this blockchain. But it's in alpha and beta. It needs a backstory and some lore for the characters, which is where we come in! You can also collect the cards here: steemmonsters.com/#

It's only a few bucks to get started, and the booster packs are cheap too. You can trade with others as well. Let me know if you have any more questions. I'm over on Discord.