diff --git a/module/hook-renderChatLog.js b/module/hook-renderChatLog.js
new file mode 100644
index 00000000..c34d03d8
--- /dev/null
+++ b/module/hook-renderChatLog.js
@@ -0,0 +1,9 @@
+/* -------------------------------------------- */
+import { RdDUtility } from "./rdd-utility.js";
+
+/* -------------------------------------------- */
+// Activate chat listeners defined 
+Hooks.on('renderChatLog', (log, html, data) => {
+  RdDUtility.chatListeners(html);
+});
+
diff --git a/module/rdd-main.js b/module/rdd-main.js
new file mode 100644
index 00000000..ad48fba6
--- /dev/null
+++ b/module/rdd-main.js
@@ -0,0 +1,52 @@
+/**
+ * RdD system
+ * Author: LeRatierBretonnien
+ * Software License: GNU GPLv3
+ */
+
+/* -------------------------------------------- */
+
+/* -------------------------------------------- */
+// Import Modules
+import { RdDActor } from "./actor.js";
+import { RdDItemSheet } from "./item-sheet.js";
+import { RdDActorSheet } from "./actor-sheet.js";
+import { RdDUtility } from "./rdd-utility.js";
+
+/* -------------------------------------------- */
+/*  Foundry VTT Initialization                  */
+/* -------------------------------------------- */
+
+Hooks.once("init", async function() {
+  console.log(`Initializing Reve de Dragon System`);
+  
+  // preload handlebars templates
+  RdDUtility.preloadHandlebarsTemplates();
+    
+	/**
+	 * Set an initiative formula for the system
+	 * @type {String}
+	 */
+	CONFIG.Combat.initiative = {
+	  formula: "1d20",
+    decimals: 2
+  };
+
+	// Define custom Entity classes
+  CONFIG.Actor.entityClass = RdDActor;
+  CONFIG.RDD = {} 
+  CONFIG.RDD.resolutionTable = RdDUtility.buildResolutionTable();
+  CONFIG.RDD.level_category  = RdDUtility.getLevelCategory();
+  CONFIG.RDD.carac_array     = RdDUtility.getCaracArray();
+  CONFIG.RDD.bonusmalus      = RdDUtility.getBonusMalus();
+  game.data.RdDUtility = RdDUtility;
+  
+  // Register sheet application classes
+  Actors.unregisterSheet("core", ActorSheet);
+  Actors.registerSheet("foundryvtt-reve-de-dragon", RdDActorSheet, { makeDefault: true });
+  Items.unregisterSheet("core", ItemSheet);
+  Items.registerSheet("foundryvtt-reve-de-dragon", RdDItemSheet, {makeDefault: true});
+
+
+});
+