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  • World of Warcraft
  • 163,678 Monthly Downloads
  • Supports: 5.4.2
  • 17,885,420 Total Downloads
  • Updated 02/09/2014
  • Created 06/06/2009
  • 9,306 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About _NPCScan

_NPCScan tracks seldom-seen rare mobs by proximity alone, making the old “/targetexact …” macros obsolete. It has the same range as those targeting macros, but you won't have to mash any buttons. Just go about your business and let _NPCScan alert you when it finds something.

V5.x Changes
  • Due to changes in how the addon stores data, some settings might get reset when updating.
  • The default alert is suppressed while on flight paths by default. If a mob is found, the whisper sound effect will play and the mob & location will be placed in the chat log. You can turn this off from the settings.
  • _NPCScan now includes all rare mobs in the game.
  • The "One of Many", "Timeless Champion" & "Champions of Lei Shen" Achievements have been added.
  • Rare Mobs and Tameable Mobs have their own tabs now.
  • Custom mobs have been added for the Ghostly Pandaren Fisherman & Craftsman.
  • Individual mobs can be removed from their tabs to stop tracking them.

If you have a question check the FAQ, or a problem create a ticket

If you have a question/comment about _NPCScan.Overlay please post it in it's comment section.



NPCScan now tracks "vignettes". These are the little skulls appear on the minimap, that denote rare mobs. This is a beta feature and is disabled by default. Enabling this feature will alert you to a rare that's within minimap range, without any worries about having to clear your cache. When you get an alert you will be shown a target button similar to the standard mob alert, letting you know that a vignette mob was detected. Clicking on the target button will try and target the mob. Once a mob is targeted, the target button will update to reflect the mob found.

Known Issues: Currently there is no way to detect what mob the vignette represents. Because of this there is no way to filter out and ignore individual mobs. The vignette tracking will ignore achievement mobs groups that have their tracking turned of via unchecking their tab. Also the targeting button might have some issues if there are more than one vignette mobs in target range.

The Cache

This addon doesn't use nameplates or mouseover units to find rares. Instead, it checks your creature cache for the moment a rare mob is found. There is one catch to this technique however: Once a mob is “found”, _NPCScan won't be able to find it again until your cache is clearedf you find a rare mob's corpse—Dirkee for example—you would have to clear your cache before _NPCScan would find Dirkee again. Thankfully, clearing your cache is a safe and simple matter.

Clearing Your Cache

To clear your cache, follow these straightforward steps:

  1. Exit World of Warcraft
  2. Delete the “Cache” sub-directory inside your World of Warcraft folder.  For example on a standard Windows XP installation, you would delete the folder “C:\Program Files\World of Warcraft\Cache”.
  • Advanced users can delete “C:\Program Files\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb” specifically to improve log-in times, where enUS is your language code.

Note: Windows Vista and Windows 7 users see this info if your cache isn't in the location above.

That's it. Log in after you've done that and you'd be able to find Dirkee a second time. It's completely safe because WoW will recreate your Cache folder after you log in again.

Cache Warning

If a rare mob is already cached when you log in, _NPCScan will print a warning message with the names of those mobs. If you see this message but still want to find the listed NPCs again, it's time to clear your cache by following the above procedure; Otherwise, you can quit searching for those mobs using the Search options window detailed below. You can suppress this log-in message using the main options pane, as well.

“Found” Alert

When a rare mob is found, _NPCScan alerts you by playing a loud and distinctive sound, making your screen pulse red, and displaying an animated Targeting Button. To get a feel for what this alert looks and sounds like, try the “Test Found Alert” button in the addon's main Interface Options panel. (See the Options section below.)

Targeting Button

When clicked, the targeting button tries to target the most-recently-found mob.  You can also bind a key to hit this button. If the default button position isn't to your liking, you can move it while holding your CTRL key.

Note: The button cannot be shown during combat. In the unlikely case that you do find a rare while fighting, the button will appear after you leave combat. You will still hear the alert however, and the name of the mob will appear in your chat log.


_NPCScan's main options window can be accessed from the Interface Options menu. This panel includes a “Test Found Alert” button, various ways to customize the alert sound, and an option to suppress cache warning messages on log-in. New sounds can be added to the alert sound dropdown menu by installing SharedMedia-type addons.

Search List

The list of mobs that _NPCScan searches for can be modified easily through the Interface Options panel, however it comes pre-configured with most rare Outlands and Northrend mobs.; To access the mob list, type “/npcscan”. Grayed out NPCs in a list aren't being searched for, either because they're cached or not needed for their achievement.

The first tab available lists Custom NPCs that you can enter or remove manually. NPCs that are already cached show a red “X” in the first column. You can add or remove Custom NPCs with the [+] and [-] buttons at the bottom right.

All other tabs control achievements like Bloody Rareand Frostbitten. These tabs show an additional column on the right with green check marks for completed achievement mobs. You may enable or disable tracking each achievement with its tab's checkbox.

To remove non custom mobs from a tab, click on the mob that you want to remove and then click on the "Remove" button. This will remove the selected mob from the current tab and add it to the Ignore List Tab. If you ever want to restore a Ignored Mob, select it from the "Ignore List" tab, click the "Remove" button and it should be added back to its original tab.

The “Search for completed Achievement NPCs” checkbox at the top left of the pane allows you to keep looking for mobs you no longer need for achievements.

Finding NPC IDs

A mob's NPC ID is its unique identification number, and it can be found on sites like WowHead or WowDB For example, search for the mob “Dirkee” on WowHead and go to the mob's page.  That page's URL will look like

32500 is Dirkee's NPC ID.


The only problem mobs for _NPCScan are tamable beasts & Battle Pets. Whenever you run across the tamed version, _NPCScan gets tricked into thinking that mob is nearby. In order to prevent those false positives, _NPCScan only shows alerts for tamable mobs in their original zones That is, if you spot Loque'nahak in Dalaran instead of Sholazar Basin where it usually patrols, _NPCScan would ignore it. When one of these tamable mob false-alarms happens, you'll see a message in your chat window explaining why it got ignored.

Since this makes tamable mobs are so difficult to track, I suggest you fly to the tamable mob's zone first, clear your cache, and then search for it.; Any time you pass through a populated area like Dalaran, you risk filling your cache with popular rare pets.

For Battle Pets there is no way for it to determine if a mob is a spawn or someone's pet. Many Battle Pet addons and just opening the Pet Journal will often cause Battle Pets to become cached.

SLOKnightfall <>
2014-02-09 11:44:06 -0800

tagging changes


    - -Fix for stored_options error
    - -Updated the NPCScan.AutoAdd error version check
James D. Callahan III:
    - Cleanups.
    - Made the Debug function a null-op if not running a development version.
    - Added debug output frame - only available in development code. Prevents forgotten debug prints from occurring.


First Previous Page 5 of 144 Next Last
  • #2708

    Hey, how are you?

    I have a strange question. Let's see.

    I installed the addon and went to the tab "Search" in "NPCScan" term on "addons" menu. Ok, I typed the number of the npc I'm looking for and it's name and place was shown. Perfect.

    Since this mob is very very rare, I really really need to use this addon. But I'm afraid of something:

    The place where I have to look for this mob is really HUGE (a WHOLE MAP, Uldum, looking for a little camel). So, I have to fly (on my on mount) to do this faster. But I read on the menu of NPCScan that it supresses the alert in "flight paths". Since the mob doesn't fly, I thought I'd have to do this walking or mounting on mounts that don't fly.

    OMG, summarizing my question: I'm looking for a land mob, but the place it respawns is huge and I've to fly to look for faster. Flying (in my own mount) I'll be alerted if I pass next to the NPC I'm looking?

    (and an idiot question: The name of the NPC I'm looking for is bright on the addon, but there isn't a red "X" beside the description. I'll be alerted of it or not?)

    Last edited by altihhad19 on 1/18/2014 1:23:46 AM
  • #2709

    You can use your flying mount and it still will be alerted, as long as it is bright and does not have the X in the cached column.  The suppression you mentioned is only on the taxi flight path.  It will still trigger and alert when your on the taxi, but it will only display in the chat, not with the normal alert.


  • #2706

    "Due to changes in how the addon stores data, some settings might get reset when updating."

    Yeaaaah, you might want to reword that to "your sound setting will reset daily and make a horrendous horn blowing, drums beating sound that will wake everyone in a 10 mile radius when a rare is detected".

    Please fix it so the sound stops resetting! I disable it, I change it... no matter what that AWFUL default sound comes back. I'm ready to chuck this addon and I've been using it for years! I have my volume set to 5 and the default sound is still deafening! Yeesh!

  • #2707

    I'm hopeing to have some time this weekend to track down the problem.  Could you create a ticket about the problem with the following info:

    What Version of the addon are you currently using?
    Have you tried reverting to a previsous version to get the issue to stop and if so which one?
    Are you running any other NPCScan or Rare Mob tracking addons?
    Which sound are you trying to set and what addon is it included in (Needed for testig as NPCScan does not inlude any alert  sounds other than the 2 defaults.)
    How/from what menu are you setting the sound.
    After setting the sound, does it acutally play when clicking the test alert button?

  • #2716

    The reseting should be fixed with the newest version.  Also the setting has been changed to be account wide so you should not have to set it for every character.

  • #2710

    I'm using the latest version ( I only use NPC Scan and NPC Scan Overlay as my NPC scanners. I have a lot of toons (over 34) so to go through and reset each one is a bit tedious. Sometimes I forget and when an NPC is spotted it about gives me a heartattack because the default sound is sooooo loud lol  I have not tried to find a previous version that doesn't reset since it's been doing this for a couple of months now, I wouldn't know how far to go back.

  • #2705

    I set the sound option to rare detect to WHISPER PING everyday... cuz the addon "never" saves it. A fix to this minor issue would be great!

  • #2703

    dumb question/issue.... I've tried cleaing the cache folder (twice now) and even the cache folder inside the data folder (after the first cache deletion attempt) just for giggles... (wasn't a great idea... had to update files upon logging back in..)  anyways, I still don't see the routes for the things that I have found in the past and they remain checked on the list when you open up the addon thingy in the interface button (when logged in)... I even deleted the two folders when I updated them from a December update to the January 5th update... I'm lost...

  • #2704

    ah, nevermind about that.... for some reason I had to turn the big map marking back on.... (routes only showed on my mini map...) and I've never ever screwed with the settings so not sure why it did that but all is well for the moment :) thanks!

  • #2701
    Annoying sound

    Can you do not override my sound settings in each new release? Or at least make sound to all accounts? Thats really annoying to change the default - awful heartsrike - sound to something more appropriate on ALL toons after almost EACH upgrade.

  • #2702

    The sound settings should not be getting overwritten when you upgrade.  I'll look into why this is happening. 

  • #2699

    I'm annoyed by how it keeps spotting dead rares and i don't seem to be able to turn it off because there is no setting for it.

  • #2700

    There is no setting for it because it's impossible for the WoW Client's cache to differentiate between living and dead NPCs. Yes, it's annoying. No, there is nothing we can do about it.


  • #2694


    After last update i have strange problem with sound, after found few rares sound dissapear from npcscan warning. I hear all ambience sound, i see popping up button, but there is no warning sound.

    How to downgrade this addon to previous version?

    Regards MarekP.

  • #2697

    This should be fixed in the next version.

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