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  • World of Warcraft
  • 504,809 Monthly Downloads
  • Supports: 5.4.8
  • 20,509,146 Total Downloads
  • Updated 08/25/2014
  • Created 06/06/2009
  • 9,634 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 5 of 150 Next Last
  • #2817

    Have you made shure that your cache is cleared and the mobs are added to the custom list?  I just tried it out with the most recent version and got the Glinting Rapana Whelk to trigger an alert.

  • #2813

    PLZ make it so we can turn off cache if we want to its so anoying deleting it every time we log off the game and its unpractital to asume that every person only wants to kill a rare mob once even if it may get anoying every time a hunter pulls out a rare pet it should be up to us to decide!!!

  • #2814

    The addon checks for mobs being added to the game's cache.  There is no way to turn it off as it is part of the game software.

  • #2812

    I'm having trouble with NPCScan appearing as "Out of Date", regardless of the fact that I literally JUST updated to 5.4.8. I completely log out of WoW, including logging out of the app. I load the updated, unzipped files into the Interface\Addons folder. I go back and check to see the correct files installed ... and nothing. When I log into WoW, I check the addons button on the character select screen and the "Out of Date" note appears beside _NPCScan.

    Because of this error, I'm wondering if it's affecting my Overlay as well. I don't get the World Map icon when I load it. :(

    Last edited by MissSea on 6/8/2014 3:12:24 AM
  • #2809

    Not sure if I missed it or something but, I've been using NPCScan for my (now) lvl90 character. I started a new one that's now lvl22 and started to notice I'm seeing a few rares but no alerts. Checked to always show all paths, and see the rares I'm missing with an X beside them.

    I think it's looking at what my lvl90 has done and counting them as what my new character has done.

    Is there a way to separate the two? I don't want to lose what my lvl90 has found/killed because I still play with that character as well.

  • #2810

    The AddOn doesn't care what your characters have seen, per se; it only cares about the cache. If you aren't clearing it, _NPCScan isn't going to detect rares that are cached already.

  • #2821
    Quote from Torhal »

    The AddOn doesn't care what your characters have seen, per se; it only cares about the cache. If you aren't clearing it, _NPCScan isn't going to detect rares that are cached already.

    I should make a video for this the most easy way of doing it

    Best way is to use the wow shortcut on the desktop to find the folder where wow is installed then tell it to open file location and then delete cache folder from there

    Would screen shots help u guys at all???

    Or a video???


  • #2811

    Hmm.. didn't think anything was cahced. Haven't played in almost 6 months, downloaded/installed a new copy of WoW and the add-ons. When I go to an area, half the list has a red X beside the name. Humar for example, didn't sound the alarm at all, didn't even show in the list on the map, but he was right there biting me. 

    Also noticed since last I played, the side window with the list of names that sits next to the map, kinda hard to move to where I want it. Use to move anywhere, now seems to snap in place only at certain places on the screen... it supposed to do that?

  • #2808

    Within 90 minutes of installing this, it spotted Lil Timmy (8666). Much thanks!

  • #2806

    Any chance you can add the names Madexx Red Blue Black etc Instead of just Madexx same with the ones found in the vale as they are different colours Or a edit button for those screens please

  • #2807

    It looks like it should be able to be done for Madexx as each spawn has a unique creature id.  Unfortunately it looks like Portent shares one id for all the colors, so there is no way to detect which color it is.

  • #2804

    Please add a keybind to disable/enable rarespawn paths on minimap. Im a gatherer and the paths often obscure nodes. So I frequently have to turn them on and off depending on what im looking for.

  • #2815

    A minimap keybind has been to the next version of NPCScan.Overlay.

  • #2802

    How do I move the npc found pop up??

  • #2803

    You can make it appear using the "Test Alert Found" button in the options menu.  Once it is displayed, you can move the name plate by holding the <Control> key and left clicking to drag it to a new position.

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