18 sided original dice pair. These are designed to where not all 18 numbers are the same difficulty level to get. Numbers 1 - 6 are easier to roll due to the geometry of the dice. 7 - 18 are harder to roll.

Game:

The game is called 13 Plus. Each player gets three roll attempts per turn. Roll both dice each time. Rolling 12 or lower total of both dice gets you zero points. 13 or higher on a roll, you get that number of points. First person to reach at least 100 points wins. If you roll double 18s, instant win. 

These are print in place, no assembly required, no supports required. I raised the wall count and infil density to give the dice a nice quality feel.