WordPress database and Unity high scores

Hi,

I am trying to figure out what is going to be my best route to go in this choice. I have a Unity game I have integrated with WordPress but I need to send and receive the high scores of the game in WP database.

1. Should I create my own table in WP to store my high scores along with the user information of people who have signed up.
2. Should I use Custom Post Types to store this kind of information instead of a my own table in WP?

This is related to this post, but I wanted to make sure what the right approach for this would be.

Many thanks