diff --git a/doomsday/apps/gloom/src/gloomapp.cpp b/doomsday/apps/gloom/src/gloomapp.cpp
index 53a082376a..a723b05f4e 100644
--- a/doomsday/apps/gloom/src/gloomapp.cpp
+++ b/doomsday/apps/gloom/src/gloomapp.cpp
@@ -22,10 +22,12 @@
 
 #include <gloom/gloomworld.h>
 #include <gloom/world/user.h>
+#include <gloom/world/map.h>
 
 #include <doomsday/DataBundle>
 
 #include <de/Beacon>
+#include <de/DirectoryFeed>
 #include <de/DisplayMode>
 #include <de/FileSystem>
 #include <de/Info>
@@ -47,6 +49,7 @@ DE_PIMPL(GloomApp)
     std::unique_ptr<AppWindowSystem> winSys;
     std::unique_ptr<AudioSystem>     audioSys;
     std::unique_ptr<GloomWorld>      world;
+    String                           currentMap;
 
     Impl(Public *i) : Base(i)
     {
@@ -92,9 +95,10 @@ DE_PIMPL(GloomApp)
 
     static void receivedRemoteCommand(iAny *, iDatagram *socket)
     {
-        while (String msgData = Block::take(receive_Datagram(socket, nullptr)))
+        auto *d = reinterpret_cast<Impl *>(userData_Object(socket));
+        while (auto msgData = Block::take(receive_Datagram(socket, nullptr)))
         {
-            Loop::mainCall([msgData]() {
+            Loop::mainCall([d, msgData]() {
                 const Info msg(msgData);
                 for (const auto *elem : msg.root().contentsInOrder())
                 {
@@ -105,7 +109,7 @@ DE_PIMPL(GloomApp)
                         {
                             if (block.name() == "loadmap")
                             {
-                                debug("load map: '%s'", block["package"].c_str());
+                                d->loadMapPackage(block["map"], block["package"], block["nativePath"]);
                             }
                         }
                     }
@@ -125,6 +129,39 @@ DE_PIMPL(GloomApp)
             self().shaders().addFromInfo(**i);
         }
     }
+
+    void loadMapPackage(const String &mapId, const String &packageId, const NativePath &location)
+    {
+        debug("load map '%s' from package '%s' in '%s'",
+              mapId.c_str(),
+              packageId.c_str(),
+              location.c_str());
+
+        if (!mapId || !packageId || location.isEmpty() || !location.exists()) return;
+
+        auto &pld = PackageLoader::get();
+
+        if (currentMap)
+        {
+            pld.unload(currentMap);
+            pld.refresh();
+            currentMap.clear();
+        }
+
+        FS::get().makeFolderWithFeed("/remote/gloom", new DirectoryFeed(location));
+
+        pld.load(packageId);
+        pld.refresh();
+        currentMap = packageId;
+
+        // Load the map.
+        gloom::Map loadedMap;
+        {
+            const auto &asset = App::asset(DE_STR("map.") + mapId);
+            loadedMap.deserialize(FS::locate<const File>(asset.absolutePath("path")));
+        }
+        world->setMap(loadedMap);
+    }
 };
 
 GloomApp::GloomApp(const StringList &args)
diff --git a/doomsday/apps/gloomed/src/editor.cpp b/doomsday/apps/gloomed/src/editor.cpp
index 8ea2ace94c..17ecba767e 100644
--- a/doomsday/apps/gloomed/src/editor.cpp
+++ b/doomsday/apps/gloomed/src/editor.cpp
@@ -1184,7 +1184,7 @@ DE_PIMPL(Editor)
     {
         if (!mapId)
         {
-            mapId = convert(QInputDialog::getText(nullptr, "Export Package", "Map ID:"));
+            mapId = convert(QInputDialog::getText(nullptr, "Export Package", "Map ID:")).lower();
             if (!mapId) return;
         }
         if (!packageName)
@@ -1209,12 +1209,33 @@ DE_PIMPL(Editor)
         }
 
         // Check that the maps.dei includes this map.
-        if (const auto *mapsInfoFile = root.tryLocate<const File>("maps.dei"))
         {
-            Info mapsInfo(*mapsInfoFile);
-            if (mapsInfo.root().contains(mapId))
+            const auto *mapsInfoFile = root.tryLocate<File>("maps.dei");
+            if (!mapsInfoFile)
             {
+                mapsInfoFile = &root.createFile("maps.dei");
+            }
 
+            Info mapsInfo(*mapsInfoFile);
+            if (!mapsInfo.root().contains(DE_STR("map.") + mapId))
+            {
+                const auto mpu = map.metersPerUnit();
+
+                // Append a new map asset.
+                String maps;
+                *mapsInfoFile >> maps;
+                maps += Stringf("asset map.%s {\n"
+                                "    path = \"maps/%s.gloommap\"\n"
+                                "    metersPerUnit <%.16f, %.16f, %.16f>\n"
+                                "}\n",
+                                mapId.c_str(),
+                                mapId.c_str(),
+                                mpu.x,
+                                mpu.y,
+                                mpu.z);
+                File &updated = root.replaceFile("maps.dei");
+                updated << maps;
+                updated.flush();
             }
         }
     }
diff --git a/doomsday/apps/gloomed/src/main.cpp b/doomsday/apps/gloomed/src/main.cpp
index a98dbcfa2c..b8329ecc72 100644
--- a/doomsday/apps/gloomed/src/main.cpp
+++ b/doomsday/apps/gloomed/src/main.cpp
@@ -26,6 +26,7 @@
 #include <de/Beacon>
 #include <de/CommandLine>
 #include <de/EmbeddedApp>
+#include <de/FileSystem>
 #include <de/EventLoop>
 #include <de/Loop>
 #include <de/Info>
@@ -191,7 +192,10 @@ int main(int argc, char **argv)
             async(
                 [&editor]() {
                     gloomCommander->sendCommand(
-                        Stringf("command loadmap{package=\"%s\"}", editor.packageName().c_str()));
+                        Stringf("command loadmap{map:%s\npackage:%s\nnativePath:%s\n}",
+                                editor.mapId().c_str(),
+                                editor.packageName().c_str(),
+                                FS::locate<const Folder>("/home").correspondingNativePath().c_str()));
                     return 0;
                 },
                 [](int) {
diff --git a/doomsday/libs/gloom/src/world/mapimport.cpp b/doomsday/libs/gloom/src/world/mapimport.cpp
index efcaac785d..5c04fac0e7 100644
--- a/doomsday/libs/gloom/src/world/mapimport.cpp
+++ b/doomsday/libs/gloom/src/world/mapimport.cpp
@@ -378,7 +378,7 @@ Map &MapImport::map()
 
 String MapImport::mapId() const
 {
-    return "map." + d->mapId;
+    return d->mapId;
 }
 
 StringList MapImport::materials() const
@@ -438,7 +438,7 @@ void MapImport::exportPackage(const String &packageRootPath) const
     // Maps included in the pacakge.
     {
         File & f   = root.replaceFile("maps.dei");
-        String dei = "asset " + mapId() + " {\n"
+        String dei = "asset map." + mapId() + " {\n"
                      "    path = \"maps/" + d->mapId + ".gloommap\"\n"
                      "    metersPerUnit " +
                      Stringf(