First off, apologies if any of this appears familiar. When doing some of my testing, I've posted threads asking questions and sharing some findings here and there. Now that I've completed most of the testing I've wanted to, I wanted to post a review of all the formulas in one place.

Most of this isn't new information, but I see a lot of uncertainty and incorrect formulas shared from time to time, so I wanted to hopefully clear things up and provide formulas that people should (hopefully) be able to trust as being exact.

Some starting info-

All ranges are calculated by the player using the corresponding items, never are they calculated by the found player or those who see and interact with summon signs. The matchmaking for levels is a one-way process that ONLY does the math based on the level of the person using multiplayer-items.

As counterintuitive as it may seem, this means a host looking for white signs can't use the formula below, it won't work exactly. Instead, do the math from the phantoms' perspective, and if the host is found within their range, then the host will be able to see their sign.

White Sign Soapstone

Red Sign Soapstone

Red Eye Orb

Blue Eye Orb

Cat Covenant Ring

Eye of Death

Lastly, I have yet to personally test the Cracked Red Eye Orbs and the Dragon Eye. From what I've read, the Dragon Eye should be exactly the same as the White Sign Soapstone and Eye of Death, while the cracked orbs are likely the same as the orb.

General

-This looks messy, no way I can remember all of that!

It's pretty simple. Almost every item uses the "co-op" range in some way. Everything is either just like the white sign soapstone, or uses the same range on the upper or bottom end only and removes the level cap from the other end (allowing for invading far above or below your level). The ONLY exception appears to be the Red Eye Orb. Instead of using the complete "10 + 10%" formula, it drops the first "10" from the equation.

EDIT: Also, the Blue Eye Orb also uses a unique formula to find the lower level limit.

-How does the rounding work?

When you calculate the percentage part of the formula, the resulting decimal place is always truncated into non-existance (or you could also say it always rounds down to the nearest whole number, even if it's .9).

For example, a level 59 player trying to find out their co-op range simply calculates +/- 15. This is because for the "10 + 10%" part of the formula, it's actually just "10 + 5", not "10 + 5.9".

-Isn't co-op range actually 15%? Hasn't this been tested?

I've seen this mentioned a bunch, but I'm confident it's a mistake. And what do people mean exactly, 10 + 15% or just 15%? Either way, neither of those formulas seem to work. 10 + 15% almost works when you try to calculate from the host's perspective, which is how I believe people came to think this, but it still doesn't really work that way (it'll give you a very-wrong lower limit, and a slightly-wrong upper limit).

-Don't subros have an expanded range?

I really don't think so. I think people made the mistake of trying to calculate the range from the host's perspective. I believe 10 + 10% explains the range exactly and correctly when you calculate from the phantom's perspective, for everyone including sunbros.

-What about the forest?

It has level restrictions. Yes, you can invade any level higher, but that's no different than the Red Eye Orb and the Red Sign Soapstone. You can't invade below co-op range as a Forest Hunter, and all other items maintain their normal level ranges when used in the forest.

Most testing was done in 1.05, but some retesting has been done in 1.06 and nothing has appeared to change.

Most of this isn't new information, but I see a lot of uncertainty and incorrect formulas shared from time to time, so I wanted to hopefully clear things up and provide formulas that people should (hopefully) be able to trust as being exact.

Some starting info-

All ranges are calculated by the player using the corresponding items, never are they calculated by the found player or those who see and interact with summon signs. The matchmaking for levels is a one-way process that ONLY does the math based on the level of the person using multiplayer-items.

As counterintuitive as it may seem, this means a host looking for white signs can't use the formula below, it won't work exactly. Instead, do the math from the phantoms' perspective, and if the host is found within their range, then the host will be able to see their sign.

White Sign Soapstone

+ / - (10 + 10% of the item-user's level)

Level 50 can be matched with: 35-65

Level 100 can be matched with: 80-120

notes: I cannot stress enough that this doesn't work from the host's perspective.

A level 100 host will be able to see signs from phantoms between the levels of 82-122, a different range than the player using the soapstone.

Red Sign Soapstone

-(10 + 10% of the item-user's level), or any level higher

Level 50 can be matched with: 35-713

Level 100 can be matched with: 80-713

Red Eye Orb

-10% of the item-user's level, or any level higher

Level 50 can be matched with: 45-713

Level 100 can be matched with: 90-713

notes: Surprisingly, not the exact same range as the Red Sign Soapstone.

Blue Eye Orb

Lower Level Limit: - (50 + 20% of the item-user's level)

Upper Level Limit: + (10 + 10% of the item-user's level)

Level 100 can be matched with: 30-120

Level 200 can be matched with: 110-230

notes: Contrary to popular belief, it has been very carefully tested (using new tools available through modding) and found that Sin has no impact on the level range. Instead, two different calculations find the upper and lower level limits. It is a fixed amount based on the invader's level. The Darkmoon Ring has the same range as the Blue Eye Orb.

Cat Covenant Ring

-(10 + 10% of the item-user's level), or any level higher

Level 50 can be matched with: 35-713

Level 100 can be matched with: 80-713

notes: Contrary to popular belief, this ring and the forest are not without level restrictions. This ring has the same level range as the Red Sign Soapstone.

Eye of Death

+ / - (10 + 10% of the item-user's level)

Level 50 can be matched with: 35-65

Level 100 can be matched with: 80-120

notes: Same as the white sign soapstone.

Lastly, I have yet to personally test the Cracked Red Eye Orbs and the Dragon Eye. From what I've read, the Dragon Eye should be exactly the same as the White Sign Soapstone and Eye of Death, while the cracked orbs are likely the same as the orb.

General

-This looks messy, no way I can remember all of that!

It's pretty simple. Almost every item uses the "co-op" range in some way. Everything is either just like the white sign soapstone, or uses the same range on the upper or bottom end only and removes the level cap from the other end (allowing for invading far above or below your level). The ONLY exception appears to be the Red Eye Orb. Instead of using the complete "10 + 10%" formula, it drops the first "10" from the equation.

EDIT: Also, the Blue Eye Orb also uses a unique formula to find the lower level limit.

-How does the rounding work?

When you calculate the percentage part of the formula, the resulting decimal place is always truncated into non-existance (or you could also say it always rounds down to the nearest whole number, even if it's .9).

For example, a level 59 player trying to find out their co-op range simply calculates +/- 15. This is because for the "10 + 10%" part of the formula, it's actually just "10 + 5", not "10 + 5.9".

-Isn't co-op range actually 15%? Hasn't this been tested?

I've seen this mentioned a bunch, but I'm confident it's a mistake. And what do people mean exactly, 10 + 15% or just 15%? Either way, neither of those formulas seem to work. 10 + 15% almost works when you try to calculate from the host's perspective, which is how I believe people came to think this, but it still doesn't really work that way (it'll give you a very-wrong lower limit, and a slightly-wrong upper limit).

-Don't subros have an expanded range?

I really don't think so. I think people made the mistake of trying to calculate the range from the host's perspective. I believe 10 + 10% explains the range exactly and correctly when you calculate from the phantom's perspective, for everyone including sunbros.

-What about the forest?

It has level restrictions. Yes, you can invade any level higher, but that's no different than the Red Eye Orb and the Red Sign Soapstone. You can't invade below co-op range as a Forest Hunter, and all other items maintain their normal level ranges when used in the forest.

Most testing was done in 1.05, but some retesting has been done in 1.06 and nothing has appeared to change.

Last edited by Anonymous on Fri Aug 02, 2013 6:49 am, edited 2 times in total.