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  • World of Warcraft
  • 92,979 Monthly Downloads
  • Supports: 6.2.3
  • 16,037,154 Total Downloads
  • Updated 11/28/2015
  • Created 09/13/2009
  • 6,988 Favorites
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  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
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Support development! **

About _NPCScan.Overlay

NPCScan.Overlay is an addition to _NPCScan that adds map overlays for rare mob patrols. When you search for a rare in _NPCScan, _NPCScan.Overlay will show where it patrols until you find it. It works similarly to keithgabryelski's Rare Spawn Overlay's , but supports the minimap and has a much smaller download size, along with a few new features.

Special thanks to Rare Spawn Overlay's patrol paths and Routes minimap drawing code for inspiration!

Note: _NPCScan.Overlay can integrate with _NPCScan if you have installed it, but make sure to keep both up to date if you do use both!

If you have a question check the FAQ, or a problem create a ticket


World Map

In addition to drawing paths on the World Map, _NPCScan.Overlay adds a key to a corner of the window with each rare's name. It only appears in zones that have rare maps, like Netherstorm as seen in the screenshot. Hovering over a mob's name in the key will cause the mob's path on the map to start flashing. If you need to read something under the key, it can be toggled by Clicking on the Key Toggle button on the map. The key can be repositioned by just moving your mouse over top of it while holding the shift key and the key will jump to a different corner.

Most map mods like Atlas will inherit the key and overlays from this module. Even Carbonite's map display will show them.

Battlefield Minimap

The small “Battlefield Minimap” (AKA the “Zone Map”) also shows mob paths.


All shapes and sizes of minimaps are supported. Rotating minimaps work fine as well.

One feature not shown in the screenshot is a thinner 100 yard range ring around your character. It helps you gauge _NPCScan's detection range, so you can sweep through zones more effectively. This option can be found in the Minimap subsection of the options panel, detailed below.


_NPCScan.Overlay's options can be found under _NPCScan's main options menu, under _NPCScan > Overlay or as its own entry of _NPCScan.Overlay if _NPCScan isn't installed. This panel can be opened with the “/npcscanoverlay slash command, or “/overlay” for short.

The “Always show all paths” checkbox at the top of the pane overrides the instructions of NPC tracking mods like _NPCScan to hide unused paths, and always displays all known paths instead.

The rest of the configuration pane lists each map display's options. You can enable/disable each map from here, as well as configure individual settings for them.

Each map display can have its overall transparency set independently with the “Alpha” slider, so that it doesn't obscure the maps themselves.

James D. Callahan III <>
2015-11-28 03:39:00 -0600

Localization updates.


No changelog


First Previous Page 28 of 45 Next Last
  • #644

    Ok I did patch the code as a workaround, seems to work, but no warranties ;-)

    In _NPCScan.lua:

    In function ScanAdd after line 275:   CacheList[ NpcID ] = Name;
    insert line 276:   NS.Overlays.Add( NpcID ); -- PATCH

    then in line 377:  and ScanAdd( NpcID )
    add to read the following:  and ( ScanAdd( NpcID ) or true )

    The first patch makes cached NPCs which are not yet in the achievement shown by the overlay. The second patch makes them to be scanned as well as ScanAdd does not return true for cached NPCs which appears non-sense to me in this context.

    As said above it is only a dirty fix as workaround. It seems to work for th eachievement NPCs but will not work for the "Normal" NPCs not making part of an achievment. I have not yet looked into those.



  • #646

    Game Menu -> Interface -> Addon -> _NPCScan -> Overlay -> Always Show All Paths. Turn that on so the paths would stay there after an NPC is found, dead or alive.

    Though this mod should be used in conjuncture with _NPCScan, the main mod. It flashes your screen and make a loud warhorn noise when one of the NPC you wish to find is found.

    However, since the mod detects such NPC when the game adds it into the cache and will stop doing so afterwards, you will need to keep deleting World of Warcraft\Cache\WDB\enUS\creaturecache.wdb or the mod will stop alerting you.

  • #643

    I have now deleted all saved variables for this mod. It appears that for some reason I did not see all the options in WOW before.

    I now found th eoption to turn on/off the hiding of paths or the search for NPCs. However I do still not understand the mechanics behind. Krol th eBlade for instance is correctly marked as not finished for the achievement but it is dimmed (i.e. not shown on the map nor searched) apparently because it is cached.

    What is this caching about ? And how to disable it. Of course one want to search for that NPC as long as the achievment criteria is not met. Even if I switch on the option to search for all NPCs it will still not show the cached ones.



  • #642


    Ok found that the code is based on the Achievments. However for example I just located "Krol the Blade" which was dead when I arrived. Now he is shown in the cached data and no longer shown on the overlay map while the Glorious Achievment still shows him as not killed.

  • #640

    Wieso muss man "Veraltete Addons laden" aktivieren damit _NPCScan.Overlay weiter funktioniert, wird das Addon nicht mehr aktualisiert?

  • #639

    Colors and names of rares do not show up once a character has killed a specific rare, but they show up for alts who have not.

  • #638

    Any chance this could be updated (maybe an additional add-on to work with it) to show the pathing of the hunter rares in Pandaria?

  • #635

    An update,  if possible, it will be greatly apreciated, tks

  • #634

    Was wondering as well if you could add a kill count as well for the rares and the time it was killed and found and maybe deaths this could make a new feature

  • #633

    There is some sort of delay bug

    I think it might be something to do with the colour it shows


    On the overlay it might be green but it will come up with a blue colour instead

  • #632

    Not working at all for me in 5.1

    Acts like it's not there

  • #636

    Works fine for me. Did you remember to turn on outdated addons?

  • #631

    Getting an error wiht 5.1 about mapid 809. Wanted to let you know. Will try loading it up in different areas (Was in bank in 2moon).

  • #630

    any idea why i can't get overlay in pandaria but i can in northrend?  using mapster as my map add on

  • #629

    There seems to be a bug where it delays in showing the rare that has been found not all rares do it but some do delay in showing it

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