Invitation to the Abyss


Limited Time Bonus ( PDT )   1:00 am  12:59 am  Thu  ( Stamina / 2 ) 


Show all:  
FLR   Type  TRN  ATK  DEF  HP  Memo Loot 


   2  2450  112  7420  Lv.8 
   4  3604  112  13191  Lv.8 
   4  7837  0  35506  Lv.6 
   2  2858  162  14031  Lv.6 
   1  1611  700  8819  Lv.5 
   1  1625  700  8889  Lv.5 
   5  9999  60000  18  Lv.1 
   1  384  60000  25  Lv.1 

Show all:  
FLR   Type  TRN  ATK  DEF  HP  Memo Loot 


6   x 2  2  3335  189  16165  Lv.7 
6    2  5280  240  151800  Lv.10 


7    1  4750  450  285972  Lv.5 
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Stone = Estimated number of stones to clear this dungeon Time = An approximation based on each individual build 
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.