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  • World of Warcraft
  • 543,813 Monthly Downloads
  • Supports: 5.4.8
  • 20,666,068 Total Downloads
  • Updated 08/25/2014
  • Created 06/06/2009
  • 9,672 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 and may not work 100% of the time.

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.

James D. Callahan III <>
2014-08-25 19:12:48 -0500


James D. Callahan III:
    - Moved CacheWarnings option to global from per-character.
    - Cleanups
    - Removed commented-out code.


First Previous Page 52 of 150 Next Last
  • #2009
    For everyone who's going to complain and point out that this addon doesn't work right now it's because Blizzard recently did an update patch, which most of you should have noticed by now, and the Addon Manager hasn't updated this addon yet. Be patient. Take a deep breath. It will be back.
  • #2005

    having an issue loading this there an update coming?

  • #2004

    can u add in the 3 new 5.1 rares, I manually entered them in anyway, your addon!

  • #2002

    I have followed the instruction's for vista and there is no world of warcraft for me to clear to clean out my npc scan, what do I do now to clear out my npc scan?


  • #2006

    Click on your start button. Search for "world of warcraft" and do not press enter. Just wait and it should show you the program. Even though it looks like it is done loading, there is more to come, so wait a bit more until a bunch of folders come up. The first one should be your World of Warcraft folder. Click on it and you should see a folder named "Cache" inside. Delete that folder.

  • #2001
    Adding tracking for other NPC achivements?

    Is there an easy way to track other interaction achivements? Like the /love squirrels achivements?

    I know that I can track them by adding them individually, but seeing at the kill achivements list which have been found and which haven't I thougth that this would be smarter.

    I tried adding the achivement ID to the list along with the three kill-achivements in ...\World of Warcraft\Interface\AddOns\_NPCScan\_NPCScan.lua
    This gave me a tab in the interface, but the only content is the achivement text, I was really hoping for the full list.

    Is there just something I'm missing or is there some programming missing, that fouls my attempt?

  • #2000

    To receive an alert whenever someone drops a Blingtron 4000, add a custom NPC with npc=43929 and leave the world blank.

  • #1998

    sry but this addon suck at really important point -> SETTINGS god damn it i cant set up simplest and most dump setting "constant overlay" why the fu... there is no such option, or at lest a manual reset .....?

  • #1996

    I accidently removed Custom NPCs (I thought I was removing cached -.-") and I tried to reinstall, delete cache etc but I can't see them anymore.. How can I fix this?


  • #1994

    stopped working for me also, and the manual deleting button to remove cached bpc's is keeps disapearing for me. re instal didnt work :l

  • #1992

    Is it possible for NPC scan to pick up on the loose dark soil that have the items for halfhill persons rep?

  • #1999

    The Dark Soils are an object (object=210565), specifically a container, like a treasure chest. Whereas the Camel Figurines were an NPC (npc=50410).  Try Gathermate with Gathermate Data.  It shows the spawn locations of Dark Soils which are considered by the add-on to be a treasure node.

    Last edited by billmort on 11/23/2012 4:50:11 PM
  • #1993

    Doubtful. Much like the camel figurines, these are not targetable, just lootable.

  • #1995

    But the camels did work in NPC Scan. The dark soils however I am not sure. They are way more common then the camels were so I don't see much point. You would have to clear the cache everytime you found one and you can easily find several within a few minutes in Four Winds.

  • #1989
    Hearing Alert ALt+Tabbed

    My system is fast enough to swap between game/desktop without needing to run Windows mode, but when I''m camping something and am alt+tabbed I can't hear the "alert" from NPCScan when a rare spawns, which I hate, i have better things to do then just stare at the WoW UI waiting for it to happen, and yes I do have sound in the background enabled.

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