When thinking about a formula for my top 10 games of 2019, I knew it had to take into account both hours played and times played. In 2019 I played Sagrada 13 times for a total of 6 hours, and I played Terraforming Mars 4 times, for a total of 10 hours. It seems like simply adding the 2 numbers together would be a fair way to even out those two variables.
I then thought about adding in dollars spent on the game. But I couldn’t work out whether it should be an addition to the score, or a negative.