I really liked the rules. The skills and levels feel fair, fun and solid. I guessed the fourth skill level would be d4, d6, d7, and d8. Is that right?
The theme is great too. Good job with this unique game!
I use this variants of this sort of step dice system in a lot of my stuff.Typically it is d4, d6, d8. d10, d12, d20, following the pattern of a set of RPG dice.