diff --git a/modules/mournblade-main.js b/modules/mournblade-main.js
index 7912411..690823f 100644
--- a/modules/mournblade-main.js
+++ b/modules/mournblade-main.js
@@ -72,6 +72,32 @@ function welcomeMessage() {
     ` });
 }
 
+/* -------------------------------------------- */
+// Register world usage statistics
+function registerUsageCount( registerKey ) {
+  if ( game.user.isGM ) {
+    game.settings.register(registerKey, "world-key", {
+      name: "Unique world key",
+      scope: "world",
+      config: false,
+      default: "",
+      type: String
+    });
+
+    let worldKey = game.settings.get(registerKey, "world-key")
+    if ( worldKey == undefined || worldKey == "" ) {
+      worldKey = randomID(32)
+      game.settings.set(registerKey, "world-key", worldKey )
+    }
+    // Simple API counter
+    let regURL = `https://www.uberwald.me/fvtt_appcount/count.php?name="${registerKey}"&worldKey="${worldKey}"&version="${game.release.generation}.${game.release.build}"&system="${game.system.id}"&systemversion="${game.system.version}"`
+    //$.ajaxSetup({
+      //headers: { 'Access-Control-Allow-Origin': '*' }
+    //})
+    $.ajax(regURL)
+  }
+}
+
 /* -------------------------------------------- */
 /*  Foundry VTT Initialization                  */
 /* -------------------------------------------- */
@@ -92,7 +118,7 @@ Hooks.once("ready", function () {
     let sidebar = document.getElementById("sidebar");
     sidebar.style.width = "min-content";
   }
-
+  registerUsageCount('fvtt-mournblade')
   welcomeMessage();
 });
 
diff --git a/system.json b/system.json
index 6c7b315..f555f03 100644
--- a/system.json
+++ b/system.json
@@ -1,7 +1,7 @@
 {
   "id": "fvtt-mournblade",
   "description": "Mournblade RPG for FoundryVTT",
-  "version": "10.0.4",
+  "version": "10.0.5",
   "authors": [
     {
       "name": "Uberwald/LeRatierBretonnien",
@@ -15,7 +15,7 @@
   "gridUnits": "m",
   "license": "LICENSE.txt",
   "manifest": "https://www.uberwald.me/gitea/public/fvtt-mournblade/raw/branch/v10/system.json",
-  "download": "https://www.uberwald.me/gitea/public/fvtt-mournblade/archive/fvtt-mournblade-10.0.4.zip",
+  "download": "https://www.uberwald.me/gitea/public/fvtt-mournblade/archive/fvtt-mournblade-10.0.5.zip",
   "packs": [
     {
       "type": "Item",