[2022] Help Determine Increasesd Item Rarity Mechanics!

" mekakat wrote: The wording of Increased Item Rarity leads me to believe that each equipable item has an associated numerical "rarity." Each time an item drops, a random rarity is determined and then multiplied by your IIR. If this rarity is above a certain threshold (but below the next), it will be a magic item, or if it is above a higher threshold it will be a rare. I suspect Unique items may have different drop mechanics, so they will be disregarded.

No, rarity is not a numerical value. There are four rarities in the game: Normal, Magic, Rare, and unique. "rarity" is not some hidden number that causes these and unspecified thresholds, it's simply the property of being one of these rarities. Unique is not an exception, it's a rarity like any other.
Any arbitrary drop has a certain chance to be upgraded to magic, any drop that does has anohter chance to upgrade to rare, and any rare drop then has another chance to upgrade to unique. IIR increases the first chance - the chance an item will drop as (at least) magic. By doing so, this has a knock-on effect on the other rarities - if twice as many items drop as at least magic, and N% of magics upgrade again to rare, then, twice as many items will drop as rare, since the same n% is applied to a greater number, and the same again for uniqe.

" Malone wrote: Does it mean that base item is decided before the rarity ? If I remember well, GGG staff said the contrary before...

No, the rarity is decided first using the method Mark described.

" Mark_GGG wrote: Any arbitrary drop has a certain chance to be upgraded to magic, any drop that does has anohter chance to upgrade to rare, and any rare drop then has another chance to upgrade to unique. IIR increases the first chance - the chance an item will drop as (at least) magic. By doing so, this has a knock-on effect on the other rarities - if twice as many items drop as at least magic, and N% of magics upgrade again to rare, then, twice as many items will drop as rare, since the same n% is applied to a greater number, and the same again for uniqe.

Actually, it hasn't worked like that for some time. It currently rolls for Unique first, then if that fails, it rolls for Rare, then Magic, etc. +IIR is applied to every roll (with diminishing returns).

" liquidSG wrote: So how are currency drops factored into this? Does it roll it before the "is it unique/rare/magic roll first?

It rolls rarity first, because if it rolls Unique it handles that differently (not caring about base type). If it isn't Unique, then it rolls a random item "normally". If that item doesn't care about rarity (e.g. currency) then the rarity is ignored.

" ScrotieMcB wrote: Please provide more information on diminishing returns. :)

It's a seeeeecret~ :)