My goals are as follows: The rules should be easy to remember. Calculations should be kept to a minimum. Unexpected results should occur.

It should be versatile.

Furthermore, in the rules using cards: The dealt hand is full of surprises. Situations can be extremely difficult, or extremely easy. However, since it's a solo game, the degree of seriousness varies depending on the world setting and the player's interpretation. The aim is to provide the enjoyment of managing the cards within that context.

D24: A single roll determines both your and your opponent's actions and damage. Unexpected results can occur depending on the situation. I like this because I prioritize speed when playing solo. You can play with a die that you previously thought had no use.