| ABILITY SCORE | MODIFIER | DESCRIPTION |
| 1 | -5 | Completely inept or disabled |
| 2-3 | -4 | Weak, infant |
| 4-5 | -3 | Younger child |
| 6-7 | -2 | Child, elderly, impaired |
| 8-9 | -1 | Below average, teenager |
| 10-11 | +0 | Average adult |
| 12-13 | +1 | Above average |
| 14-15 | +2 | Well above average |
| 16-17 | +3 | Gifted |
| 18-19 | +4 | Highly gifted |
| 20-21 | +5 | Best in a nation |
| 22-23 | +6 | Best in the world |
| 24-25 | +7 | Best ever, peak of human achievement |
| 26-27 | +8 | Low superhuman |
| 28-29 | +9 | Moderate superhuman |
| 30 | +10 | High superhuman |
| 40 | +15 | Very high superhuman |
| 50 | +20 | Cosmic |
| COMBAT BONUS | SKILL BONUS | DESCRIPTION |
| -- | 1-4 | No training |
| 1-4 | 5-8 | Basic level of training |
| 5-8 | 9-12 | Professional level of training |
| 9-12 | 13-15 | Recognized and likely known as an expert in the skill |
| 13-15 | 17-19 | Virtual mastery of the skill |
| 16+ | 20+ | Recognized among the best trained in the world |
| Power level | Basic | Professional | Expert | Master | Best |
| 0 - 3 | 1 | 2-5 | 6-9 | 10-12 | 13+ |
| 4 - 5 | 1-2 | 3-6 | 7-10 | 11-13 | 14+ |
| 6 - 7 | 1-3 | 4-7 | 8-11 | 12-14 | 15+ |
| 8 - 9 | 1-4 | 5-8 | 9-12 | 13-15 | 16+ |
| 10 | 1-5 | 6-9 | 10-13 | 14-16 | 17+ |
| 11 - 12 | 1-6 | 7-10 | 11-14 | 15-17 | 18+ |
| 13 - 14 | 1-7 | 8-11 | 12-15 | 16-18 | 19+ |
| 15 - 16 | 1-8 | 9-12 | 13-16 | 17-19 | 20+ |
| 17 - 20 | 1-9 | 10-13 | 14-17 | 18-20 | 21+ |
