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  • World of Warcraft
  • 362,854 Monthly Downloads
  • Supports: 5.4.7
  • 18,112,950 Total Downloads
  • Updated 04/19/2014
  • Created 06/06/2009
  • 9,315 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 <>
2014-04-19 08:59:58 -0700

tagging changes


    - Added Portent to the localization files


First Previous Page 33 of 144 Next Last
  • #2211

    Would love to see an update for this add on. PLEASE!!!!!!!

    If not thanks for many years of excellent tracking. :)

  • #2210
    Re: _NPCScan when are you going to up date MOP

    hello love Npc scan when are you going to up date for MOP

  • #2208

    Got bored a few days back and went and manually updated the list of tameable pet IDs.  Might be a few errors in there, though I did try my best to be accurate.  Updated list file can be found here, just replace the _NPCScan.TameableIDs.lua file in the _NPCScan add-on folder with that.  (If you download off of Pastebin, make sure you remove the .txt from the end to make it a .lua file again.)

  • #2207

    I wonder if it is possible to change creaturecache.wbd to be only readable - it will prevent new creatures to be written in the file... am I right?

  • #2209

    It will, but the launcher likes to de-set the read-only flag so it's not as useful as could be hoped.

  • #2206

    For those wishing this addon would be updated here is a way to update it and any other addon yourself:

    1. locate and open your World of Warcraft folder

    2. within your WoW folder, open your Interface folder

    3. within your Interface folder, open your Addons folder

    4. within your Addons folder, locate and open your _NPCScan folder

    5. within your _NPCScan folder, locate and open the _NPCScan TOC File. If you've never opened these files before Windows may ask which program you want to open it with, WordPad is fine.

    6. at the top of the document you will see an interface number corresponding with the patch number. For example: "##  Interface:  50100##". The current interface number as of this date is 50200. Erase the old interface number and type 50200 in its place, save it and your addon will work. If you're ever unsure of the patch/interface number you can go to the TOC file of an addon you know is up to date and refer to its number.

    I've had to do this for several addons that aren't updated on patch day, hope this helps.

  • #2215

    There is an easier way. At the character selection screen click the AddOns button in the bottom left. Then tick "Load out of date AddOns".

    Using your method is ok if you only have a couple of addons that are out of date. But when you have several, it becomes tedious to keep having to change the toc for each of the addons.

    Better still is if the author/maintainer actually updated the addon ;)

  • #2222
    Quote from xxerty »

    There is an easier way. At the character selection screen click the AddOns button in the bottom left. Then tick "Load out of date AddOns".

    Using your method is ok if you only have a couple of addons that are out of date. But when you have several, it becomes tedious to keep having to change the toc for each of the addons.

    Better still is if the author/maintainer actually updated the addon ;)

    I thought it was strange to see so many calls for an update when it's working fine on my machine.  It didn't occur to me that folks didn't know about the version number in the toc file.

    I routinely click "Load out of date addons" and then wait to see if any of them give me errors.  Thanks to gmanus for tips on updating the toc file and thanks to xxerty for pointing out the check box for out of date addons.


  • #2212

    gonna give this a shot, thanks for the tip.

  • #2205

    NPCscan is just NOT working for me since 5.2 at all, it wont go off. Ive used npcscan for years and years and its been fine, i know how to clear the cache and what not, ive tried completely uninstalling and reinstalling, tried it ALL! it wont alert me for rares and ive stood right in front of one and it still not going off. and has NOT been cached. please update.. so many of us really love this addon :(


  • #2216

    Are you sure the rare is in the addon ?  The addon has not been updated since October. I've had to add the 5.2 rares in by hand.

  • #2202

    I'm having a weird issue. I keep getting alerts for rares even after they've been cached. This is actually really cool and I've wanted this for awhile. But I am seeing it is getting annoying. If I could disable this whenever I want it would be perfect. I'm getting tired of getting spammed everywhere I go about rares.

  • #2204

    lucky guy !

  • #2200

    i'm having trouble with my cache, it keeps telling me that i have to clear the cache, so i do, but every time i log in there are still red "x"s next to certain npc's, i found the folder on my Mac, but its still not working, anyone have any suggestions?

  • #2197

    I'm having the same problem as a few other people, my curse is telling me it's up to date, but ingame it tells me it's out of date.
    A solution would be much appreciated thanks/

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