Refinement System
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Safety Level
The Safety Level is the maximum level of refinement that can be given to equipment with guaranteed success (0% chance of failure). Anything past the safety level has chance to fail, and failure means your equipment will be permanently destroyed, including any cards and other enchantments it may have had. You won't be refunded Zeny and the ore used to upgrade if it fails. Give careful thought before deciding if you want to upgrade a piece of equipment beyond its safety level.
Premium (subscription) servers offer the following safety levels when upgrading with regular ores:
- Weapons
- Weapon Lv. 1 - Safety Level +7
- Weapon Lv. 2 - Safety Level +6
- Weapon Lv. 3 - Safety Level +5
- Weapon Lv. 4 - Safety Level +4
- Armors
- All armour types have Safety Level +4
Success chances
Success chance with normal metals
Chances to successfully refine an item are:
Probability:
| Upgrade | Lv. 1 | Lv. 2 | Lv. 3 | Lv. 4 | Armor |
| +4 -> +5 | 100% | 100% | 100% | 60% | 60% |
| +5 -> +6 | 100% | 100% | 60% | 40% | 40% |
| +6 -> +7 | 100% | 60% | 50% | 40% | 40% |
| +7 -> +8 | 60% | 40% | 20% | 20% | 20% |
| +8 -> +9 | 40% | 20% | 20% | 20% | 20% |
| +9 -> +10 | 20% | 20% | 20% | 10% | 10% |
Cumulative Probability:
| Upgrade | Lv. 1 | Lv. 2 | Lv. 3 | Lv. 4 | Armor |
| +0 -> +5 | 100% | 100% | 100% | 60% | 60% |
| +0 -> +6 | 100% | 100% | 60% | 24% | 24% |
| +0 -> +7 | 100% | 60% | 30% | 9.6% | 9.6% |
| +0 -> +8 | 60% | 24% | 6% | 1.92% | 1.92% |
| +0 -> +9 | 24% | 4.8% | 1.2% | 0.384% | 0.384% |
| +0 -> +10 | 4.8% | 0.96% | 0.24% | 0.0384% | 0.0384% |