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  • World of Warcraft
  • 506,652 Monthly Downloads
  • Supports: 5.4.8
  • 20,489,973 Total Downloads
  • Updated 08/25/2014
  • Created 06/06/2009
  • 9,630 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 61 of 150 Next Last
  • #1854

    In my WoW folder I don't have a map called 'Cache' anymore.. Since MoP launched, it is gone.. Do you know how else I can reset my cache? And you forgot to finish your command on the 2nd line. Missing a ' " ' .

    Last edited by Sjita on 9/30/2012 5:32:43 AM
  • #1855

    I know that depending on the OS the cache can be stored in a few locations. One place is in your appdata folder...."C:\Users\(username)\AppData\Local\VirtualStore\Program Files\World of Warcraft\Cache"... or in public folder ..."C:\Users\Public\Games\World of Warcraft\Cache". Can also try a computer search for the file.

    ty, the end quote mark isnt needed but yeah i forgot that lol

  • #1851

    Porque o protodraco time-lost não esta sendo indentificado quando encontrado, outro dia estava camperando passei por cima de um e o npcscan não acusou, porq isso aconteceu ?

  • #1850

    So... :D   When will there be a battle pet section?  ;)

  • #1849

    Since MoP is here.. I have no idea where to delete / clear my cache file.. I believe it is not the cache map in the data map right?

  • #1848

    does the addon scan the full minimap area or just the 100 yards?

  • #1847

    I apologize if this has been asked, but I'm wodnering if NPC Scan also scans for rare or uncommon pets, and is that in the works for a future release?


  • #1844

    This might be a dumb question but i was wondering if NPC Scan, scans all the maps in a region, like for example, lets say i'm waiting for skoll in storm peaks, and loque'nahak spawns in sholozar basin, does it still alert me even though i'm not in sholozar basin, like does it alert me for all the regions in northrend or just the map im in??

  • #1845

    Only what's in your loading area.  Easy answer, no.  If you can't /tar the NPC, it's not readable by the addon.

  • #1846



  • #1842

    I think this is probably the most frustrating addon i've tried. Allright, it warns you when a rare is found, great, but that's about it. It marks the rare with a raid target icon wich you cannot see anywhere else then having the npc in your sight. The addon warns you, you can target the npc and from then on you just have to look around (wich is the frustrating part) You start looking like a mad man only to discover you have found him to late.

    Atleast mark the map or something where the found has bin registered, or close down the range the addon detects the npc's, because as of now i miss goddamn alot of rare's cause the range is way to big and i have to search to long to find him + there is no clear mark anywhere where he should be, except a raid target icon, wich must be in viewing distance to observe.

  • #1894

    you can switch on the show target option in the minimap tracking menu, I usually find that this helps me find the rares much quicker as the target will have a distinct marker on the minimap when you click the npcscan target button.

  • #1843


    Not sure about in other zones. (Pre-Mop) NPC did put down an area icon on your mini map.

    It's probably some kinda bug atm that has not been addressed. Nor do when you hit M does it show the Npc Legend or where they "might" be for MoP zones unlike Pre-Mop ones.

    Give it some time. If not just go to wowwikki and look up the Mob name, they'll be listed on there where they have been found. It's what I have done and beat a few people to them. If it does go off, they're not far from your location.

  • #1840

    The best option for "deleting the creaturecache is to rename the file.

    On the other hand i have noticed a problem with this addon, while the method of finding the creatures is great (using the creaturecache).

    I am having massive issues finding the rare hunter pets, as it tags them as seen in the creature cache when another hunter has one.
    I have just seens someone with Skoll (not called Skoll, just Spirit Beast), and now Skoll appears on the cached list of creature's I've seen. But the NPC scan alert does not go off when these are seen.




  • #1838

    something wrong with my npcscan, from the time the patch 5.0.4 came live, my addon does not alert me for anything. i cleared cache many times and even uninstalled/reinstalled both npcscan and overlay, but it never alerts me. i fly next to rares who arent cached, see them and no alert.

    any ideas anyone?

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