diff --git a/README.md b/README.md
index 1baf0be..5de961c 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,9 @@ This is a rewrite of [rodw/age](https://github.com/rodw/age) from coffeescript t
 2. Achievement Rules are evaluated on event received rather than on `getPlayerAchievements`
 3. Achieved Achievements are also added to the `player.history`
 4. Transient rules are not yet implemented (TODO coming soon)
-5. History entries are objects with a `timestamp` Date, and Achievements have an `achieved` Date
-6. Methods return values rather than replying in Node style callbacks with errors
+5. Events are now an object with a `name` and optional `<T>data`
+6. History entries are objects with a `timestamp` Date, and Achievements are also added to `player.history` and have an `achieved` Date
+7. Methods return values rather than replying in Node style callbacks with errors
 
 ## Installation
 
diff --git a/src/@types/index.ts b/src/@types/index.ts
index e9338c0..2bf63b2 100644
--- a/src/@types/index.ts
+++ b/src/@types/index.ts
@@ -14,8 +14,9 @@ export interface Achievement {
   achieved: Date;
 }
 
-export interface Event {
+export interface Event<T = unknown> {
   name: string | number;
+  data?: T;
 }
 
 export type HistoryItem = {
diff --git a/src/GameEngine.ts b/src/GameEngine.ts
index f10adde..28504b2 100644
--- a/src/GameEngine.ts
+++ b/src/GameEngine.ts
@@ -26,6 +26,10 @@ interface GameEngineProps {
    * **achievementRules** -- An array of achievement rules (default to empty array)
    */
   achievementRules: AchievementRule[];
+  /**
+   * **players** -- An array of players (default to empty array)
+   */
+  players: Player[];
 }
 
 type GAME_ENGINE_ACHIEVEMENT_ACHIEVED = 'achievement-achieved';
@@ -72,6 +76,11 @@ export class GameEngine extends EventEmitter {
     this.datastore = props?.datastore || new MemoryDataStore();
     this.achievementRules = props?.achievementRules || this.achievementRules;
 
+    // Players aren't stored in GameEngine so loop to the `addPlayer` method
+    props?.players?.forEach((player) => {
+      this.addPlayer(player);
+    });
+
     this._on = super.on;
   }
 
@@ -91,9 +100,10 @@ export class GameEngine extends EventEmitter {
    * @param player Player
    * @param event Event
    */
-  addEvent(player: Player, eventName: Event['name']): void {
-    const event: Event = {
+  addEvent<T = unknown>(player: Player, eventName: Event['name'], data?: T): void {
+    const event: Event<T> = {
       name: eventName,
+      data,
     };
 
     this.datastore.recordEvent(player, event);