It is really an awesome game. Unfortunately, I am using my laptop and I do not have a mouse. But I still managed to reach level six and scored 28. I liked the idea of having many coins, not just bitcoin. Plus, everything went smoothly and the site is secure. I totally recommend giving it a try.

On the other hand, you could make your project bigger by adding some prizes. For example, you can hold a competition for users. Each user bets with a small amount of bitcoin. And the one who makes the highest score wins the bet. it would be more fun if you ask me.