MegaMetroCity uses 10-sided dice. One of our purposes is not to use custom dice, that’s why you can use your own 10-sided dice or MegaMetroCity’s ones to play any game that suits you.
These dice are not as known as we wanted, so here’s a little point: on 10-sided dice 0 means 10; so in a roll, the lowest value you can get is 1 and the highest one is 0.
In game you must equal or exceed a predetermined value to succeed. For example, a Hero with a 8+ Fight attribute must obtain a value of 8, 9 or 0 in a roll dice to score a successful hit.