Get an Epic Experience with Premium


Achievements Login to Add Favorites
  • World of Warcraft
  • 173,173 Monthly Downloads
  • Supports: 5.4.2
  • 17,874,045 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 4 of 144 Next Last
  • #2728

    The new version that was uploaded a little while ago should fix this.

  • #2737

    Try the most recent version. It should fix the error this time.

  • #2729

    Sorry it didn't fix it I still get the error.

  • #2726

    I just use a simple .bat to delete the cache and start WoW with one click every time i start to play.


    cd WoW\Cache\WDB\deDE
    del creaturecache.wdb

    cd WoW

  • #2725



    i tried that method multiple times now, it still does not show up in my addon list where all my other addons are... i have no idea wht causes this issue but i cannot figure out how to make this work


  • #2723

    Thank you so so so so so so so much for the last update for these 2 reasons:

    1. Goodbye awful default sound

    2. Goodbye having to set the default sound on all 9 of my toons.

    Cheers and thank you for such a vital addon.

  • #2721

    Just noticed something odd today.  Twice I've taken the portal from Jade Forest to Stormwind and each time I fly over the dwarven district, I get an alert for Scale Belly (the one from Cape of Stranglethorn).  I had cleared the cache between sessions today so that's why I know it was twice.  Maybe the addon is getting Scale Belly confused with the Sewer Beast, idk.  Anyway, not game breaking, just a heads up.

  • #2722

    It looks like Scale Belly was incorrectly taged as untameable by NPCScan, so it was possibly a hunter's pet triggering it.  Because of the wrong tag it considered it a normal alert instead of a pet alert.

  • #2719

    Just wanted to let you know that the fix you put in for the alert sound automatically disabled the "Unmute for alert sound" option when first running the new version. Missed quite a few rares while camping and doing things tabbed out due to this (since I always used to leave it enabled). Some specific notification would have been nice, though it's no longer an issue now that I realized it.

    Last edited by TheCheat5 on 1/29/2014 4:26:25 PM
  • #2720

    It should not have reset, I'll look into why.  Having that checked will not fix the issue you described as the only thing that setting does is to temporary turn on the game sound to play the alert, if a player had muted the sounds. 

    When you are tabbed out do you have the system setting set to a windowed mode? AS mentioned i the FAQ,  that if you are not and have the game set to fullscreen, then the alerts will not fire due to how the game stops updateing the frames which check for mobs..

    Last edited by SLOKnightfall on 1/29/2014 5:28:28 PM
  • #2715

    New version has been pushed with a few bug fixes and changes.  The alert sound resetting should be fixed, and the sound has been changed to be account wide, instead of being per character.  Added the option to toggle the red screen flash in the options.  Also due the increase in complaints about the old alert sound, the default has been changed to a simple huning horn, with the old style being renamed as Classic NPCScan.

  • #2717

    I'm so excited! I can't wait to log in and test it! Thanks for all your hard work. I know it may not seem like it but I am truly grateful for all the people that create and update addons. You guys rock!

  • #2713

    I just noticed something that might have been added on the last update. Now when you see a rare its name doesn't vanish from the tracker on the map, but instead a green check mark appears. Thank you so much for this slight change that makes a world of a difference for rare farmers!

  • #2711
    i have a question i am using a mac and i have tried downloading and adding NPCscan to my add ons in my wow folder but they will not show up in my in game add ons or in my character selection add ons option i have tried so many things and am looking forward to using this add-on I've heard a lot of good things about it , is there anyway i could get some help from a fellow mac user?
  • #2712


    Extract the .zip file to whatever directory it's in right now.  Drag the extraced folder (should be _NPCscan) to Macintosh HD> Applications> WoW> Interface> AddOns.

    When you log in and get to the select character screen there should be an AddOn button at the bottom left.  Click that and you should see NPCscan.

    You should be able to install any other addons the same way.

    Last edited by j_detroit on 1/20/2014 6:24:38 PM
  • To post a comment, please login or register a new account.
Login to Curse

Don't have an account? Create One.

Get an epic experience with Curse Premium
  • Faster addon downloads
  • Premium-Only Beta Giveaways
  • Ad-Free Curse experience
  • Premium Curse Client
  • and many More Features
  • Learn More »

The Sandbox: Godly Giveaway