Skill or ability checks can be checked for success by rolling a relevant ability score or under on a Xd6 scale. You can combine two ability scores if it calls for it and roll Xd12. The difficulty of the check is solely at the discretion of the DM, adjusted by your "good at" skills.
| Difficulty | Success is ability score or under |
|---|---|
| Easy | 2d6 |
| Standard | 3d6 |
| Difficult | 4d6 |
| Very difficult | 5d6 |
| Arduous | 6d6 |
| Impossible | 7d6 |
| Difficulty | Success is combined ability score or under |
|---|---|
| Easy | 2d12 |
| Standard | 3d12 |
| Difficult | 4d12 |
| Very difficult | 5d12 |
| Arduous | 6d12 |
| Impossible | 7d12 |
Any percentage-type abilities can be calculated in the way above. For each 5% in an ability (rounded down) counts as a +1 point bonus to the ability score rolled against.
So, for example, a thief attempting to pick pockets with a 40% chance and a 15 Dexterity would need to roll a 15 + (40 รท 5) = 23 or below with xd6 (x being the number of dice rolled based on difficulty).