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  • World of Warcraft
  • 168,879 Monthly Downloads
  • Supports: 5.4.2
  • 17,884,127 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 102 of 144 Next Last
  • #1112
    Keyed them back into the Search field manually and working fine. Thanks for a great add on!
  • #1107
    So If I log in and NPCscan says a rare has been cached, or it says it was cached while I rested, that means someone else in-game has killed or tamed it while I was away? If so, is there any way to add a timestamp to this? It would be very helpful in trying to track times that rares appear and then are tamed or killed. I've been trying to tame Gondria, got bored waiting last night and did a random, when I got back it said Gondria had been cached while I rested. Grrr.

  • #1109
    That message just means you saw a hunter with a rare pet summoned, either in that random group or in town most likely. The rare might still spawn at any time in the wild though.

    If you still want timestamps for _NPCScan's other messages, I recommend installing a chat mod that adds timestamps to your chat windows.
  • #1106
    I have to ask. Why is it, that if you find the bloody mob and kill him for the achievement, you can click on option to still track it. Yet, if you haven't, you have to keep clearing your cache every time a stupid hunter runs by? I seriously want to find log/aotona, just so I never have to clear my cache again.
  • #1108
    Even if you haven't gotten achievement credit for a mob yet, hunter pets will still fill your cache. There's no way to stop it from happening, since WoW does this by default. The best _NPCScan can do is hide bogus alerts from tamed rares.
  • #1104
    Will I get found alerts while world of warcraft is minimized? I'm trying to camp a Time-Lost Proto-Drake spawn, I don't want to stare at my screen for 10 hours a day...
  • #1105
    As long as you have your display mode set to "Windowed" or "Windowed (Maximized)" in Video Options then scans should work while minimized. Make sure you have sound in background enabled too so you can hear it go off.
  • #1103
    great addon! Thank you for it :)
  • #1101
    This may seem like a crazy question - been using two accounts to camp various exotic pets for my hunter. On occasion, I will get ganked and not realize it. If I am dead, but not yet released, will it still pick up the rare mob?

    BTW - great addon, a must for every hunter.
  • #1102
    _NPCScan should still go off if you haven't released, but if you wait too long and get auto-released, you might not see new rares as a ghost.
  • #1100
    I have no problems to alert, I only want to say thank you very much for this addon. I am a level 80 mm/bm hunter on CC and have found/tamed all the spirit beasts (gondria, loque, skoll, arcturis),tamed aotona as with a couple of others rares.. and am 3 rares away from getting my Frostbitten achievement. I do have this with my silverdragon...but this is by far a great addon. I notice some asking regarding the "X" next to a name. Maybe I'm reading it wrong, but what I assumed that to mean is when I see that next to a name and/or I see the "so and so" was cached while resting.... I take that as someone either tamed/killed that particular rare. It's always worked out that they have.. Maybe it's timing or maybe I've been right, either's working great! Now if I could only get that damn Time-lost proto drake!! LOL I'm tired of seeing/killing Viragosa 2-3 times a week!!! LMAO! Thank you again!!
  • #1098
    After adding alot of rare to the "Custom NPCs" menu.
    Did a /rl
    Tryed to scroll the "Custom NPCs" and got this error:

    Message: ...\_NPCScan\Libs\LibTextTable-1.1\LibTextTable-1.1.lua:486: attempt to index local 'Scroll' (a nil value)
    Time: 11/12/10 03:11:07
    Count: 20
    Stack: [C]: ?
    ...\_NPCScan\Libs\LibTextTable-1.1\LibTextTable-1.1.lua:486: in function
    ...\_NPCScan\Libs\LibTextTable-1.1\LibTextTable-1.1.lua:493: in function


    Keep up the good work, just love this addon... ;o)
  • #1094
    Excuse me, how can I share custom npcs with my alts?
    Some of my alts have the custom npcs setting from my hunter, but others have not.
    How can I imitate the settings? Please help, thank you very much!!!
  • #1097
    There's currently no way to truly share settings between your characters, but you can copy one character's settings to another. Each character has a settings file in this folder, substituting {AccountName}, {Realm}, and {Character}:


    While the game is off, you can copy one character's settings file to another character's SavedVariables folder. That should transfer the custom NPCs list and achievement settings.
  • #1099
    Got it! Thank you!
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