# d20 System Normally, skills are used for reward interactions, repairs and increased payment. The d20 library is intended to agument this system by adding in a level of chance to certain. ## Scale | Point | Modifier | | ----- | -------- | | 0 | -3 | | 1-2 | -2 | | 3-4 | -1 | | 5-6 | +0 | | 7-8 | +1 | | 9-10 | +2 | | 11-12 | +3 | | 13-14 | +4 | | 15-16 | +5 | | 17-18 | +6 | | 19-20 | +7 |