Invitation to the Abyss
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Random Encounters   | ||||||||
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| Type | TRN | ATK | DEF | HP | Memo Loot | |||
|---|---|---|---|---|---|---|---|---|
 | Sapphire Carbuncle | 2 | 2,450 | 112 | 7,420 | Lv.8 | ||
| Marine Goblin | 4 | 3,604 | 112 | 13,191 | Lv.8 | ||
| Ice Ogre | 4 | 7,837 | 0 | 35,506 | Lv.6 | ||
| Aqua Knight | 2 | 2,858 | 162 | 14,031 | Lv.6 | ||
| Pyro Devil | 1 | 1,611 | 700 | 8,819 | Lv.5 | ||
| Frost Devil | 1 | 1,625 | 700 | 8,889 | Lv.5 | ||
| Divine Indigo Mask | 5 | 9,999 | 60,000 | 18 | Lv.1 | ||
| King Metal Dragon | 1 | 384 | 60,000 | 25 | Lv.1 | ||
Major Encounters | ||||||||
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| FLR | Type | TRN | ATK | DEF | HP | Memo Loot | ||
| 6 | | x 2 Flame Knight | 2 | 3,335 | 189 | 16,165 | Lv.7 | |
| 6 | | Siren | 2 | 5,280 | 240 | 151,800 | Lv.10 | |
| 7 | | Enchantress of the Sea, Siren | 1 | 4,750 | 450 | 285,972 | Lv.5 | |
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Remarks |
| In normal dungeons, rare monsters have approximately a 2-5% drop rate based on player experience. The rate may be slightly higher for harder difficulty tiers. For end game bosses, the estimated drop chance per difficulty is: Mythical 100%, Legend 100% ( 40% If a Mythical Dungeon is available ), Master ~40%, Expert ~5%, Adept ~2%. |
Probability of mermaid drop (applicable to any other 2% drops)
1. Assuming a regular drop rate is 2%.
So, on Monday and Thursday, it’s 3% due to x1.5 boost. In other words, probability of not getting a mermaid drop is 97% (p=0.97).
Assuming independent, “probability of not dropping (x)” after n kills of mermaid is 0.97 x 0.97 x 0.97 x … = 0.97^n (x=0.97^n).
2. For x < 0.5, n > 22.7
So, if you kill at least 23 times, you will have more than 50% chance of dropping. And, since there are two mermaids in one round of dungeon (floor 6 and 7), you need to run this one 12 times to get ~50% chance.
3. For x < 0.1, n > 75.6 and for x < 0.05, n > 98.3
In the same way, if you run it 38 times (76 kills), you will get one mermaid with 90% probability. And 50 runs will bring you to 95%.
4. I got one after around 20~22 runs. So, it goes 40+ kills. My luck wasn't good but not that bad either. For n =40, x is around 0.3 (x=0.97^40). So, I belong to the bottom 30% of people.