Drop

A drop is an item obtained by killing monsters.

Drop Properties
Each drop has three values associated with it.

Drop Rate
This is the chance that player receives the drop as an item. It is modified using the character's prospecting as a percentage of the base rate. The actual check of random number vs drop rate is often called the drop roll. A successful drop roll means getting the item.

Example: A 4% drop rate would become 7% with 175 prospecting.

Drop Rate Stacking
Statistically; the more people in a fight, the better the odds that at least one person in the fight will get a given drop. The probability of at least one person getting a drop is calculated as follows:


 * D  = Probability of drop expressed as a decimal (1% = .01)
 * PP{x} = Each Character's prospecting (PP{1}=char1, PP{2}=char2, etc), expressed as a percent (divided by 100)
 * G  = Number of people in group
 * Pt = Total probability of at least on member of group getting drop (again, as a decimal)

Pt = 1-((1-(PP{1}*D))*(1-(PP{2}*D))...*(1-(PP{G}*D)))

Therefore, for an item with a drop rate of 5% and a party of 8 people with a prospecting of 100 each:

Pt = 1-((1-((1)*.05))^8) (^8 is shorthand for raising a number to the 8th power (multiplying it by itself 8 times)) = 1-((1-(1*.05))^8)   = 1-((1-.05)^8)    = 1-(.95^8)    = 1-.6634   (rounding is necessary at this point to keep the number intelligible) = .3366 or 33.66%

Prospecting Lock
Some drops have a prospecting lock. Unless the total prospecting of the player characters is equal or higher than the lock, the item will not drop.

Note: Non-paying players count as having 0 prospecting towards prospecting locks.

Drop Limit
Some drops have a drop limit. For example, a horn dropped by a monster with only two horns might have a limit of 2. This means only 2 horns may drop from each monster. Even if three or more players succeeded their drop rolls, only the two first receive a horn.

Drop Procedure
When the player side wins a fight against monsters, the players may receive drops. Each character gets a drop roll on each drop of each monster, except those with prospecting locks higher than the total prospecting of the team. If a drop roll succeeds the character receives the item, unless the drop limit has already been reached.

The character with the highest prospecting rolls for items first, followed by the character with the second highest prospecting, and so forth.