Why isn't 100% drop rate 100%?

[someonenoone11 0]

It's been bothering me for a decade. So I finally decided to ask!

Why is it that when I set an item to 100% drop rate, monsters still don't drop it 100% of the time? Like I'd set oridecons to 100%, but it's more like 33% in practice. No matter what I set the percentage, half the time monsters drop nothing. The only monsters that actually do have 100% drop rate of items is MVP and minibosses. Common mobs don't drop anything half the time. Why is this? For the record, max drop chance of all items is the default 100% in the conf files. I use mob_item_db and set the drop chance multiplier to 10000000.

[Emistry 1,932]

your drop rate are probably affected by the renewal drop rate adjustment due to your player level.

set all these value into 10000 then you should be able to achieve 100% drop regardless of any modifier.

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L44-L45

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L51-L52

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L58-L59

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L65-L66

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L72-L73

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L78-L79

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L78-L79

https://github.com/rathena/rathena/blob/157392cd1a3174abf2051907126aba4617f8ffbc/conf/battle/drops.conf#L78-L79

 

[Surefirer 0]

I believe it's the problem of penalty. Find level_penalty.txt, delete the drop penalty inside the txt.