diff --git a/shatter-backend/src/controllers/bingo_controller.ts b/shatter-backend/src/controllers/bingo_controller.ts
index acf7661..568b14c 100644
--- a/shatter-backend/src/controllers/bingo_controller.ts
+++ b/shatter-backend/src/controllers/bingo_controller.ts
@@ -40,7 +40,7 @@ export async function createBingo(req: Request, res: Response) {
         grid.every(
           (row: any) =>
             Array.isArray(row) &&
-            row.every((cell: any) => typeof cell === "string")
+            row.every((cell: any) => typeof cell === "string"),
         );
 
       if (!is2DStringArray) {
@@ -62,6 +62,11 @@ export async function createBingo(req: Request, res: Response) {
       grid,
     });
 
+    // update event with bingo id
+    await Event.findByIdAndUpdate(_eventId, {
+      bingoGameId: bingo._id,
+    });
+
     return res.status(201).json({
       success: true,
       bingoId: bingo._id,
@@ -72,13 +77,9 @@ export async function createBingo(req: Request, res: Response) {
   }
 }
 
-
-/**
- * @param req.body.id - Bingo _id (string) OR Event _id (ObjectId string) (required)
- */
 export async function getBingo(req: Request, res: Response) {
   try {
-    const { id } = req.body;
+    const { id } = req.params;
 
     if (!id) {
       return res.status(400).json({
@@ -112,7 +113,6 @@ export async function getBingo(req: Request, res: Response) {
   }
 }
 
-
 /**
  * @param req.body.id - Bingo _id (string) OR Event _id (ObjectId string) (required)
  * @param req.body.description - New bingo description (string) (optional)
@@ -143,7 +143,7 @@ export async function updateBingo(req: Request, res: Response) {
         grid.every(
           (row: any) =>
             Array.isArray(row) &&
-            row.every((cell: any) => typeof cell === "string")
+            row.every((cell: any) => typeof cell === "string"),
         );
 
       if (!is2DStringArray) {
@@ -163,13 +163,17 @@ export async function updateBingo(req: Request, res: Response) {
       });
     }
 
-    let bingo = await Bingo.findByIdAndUpdate(id, { $set: update }, { new: true });
+    let bingo = await Bingo.findByIdAndUpdate(
+      id,
+      { $set: update },
+      { new: true },
+    );
 
     if (!bingo && Types.ObjectId.isValid(id)) {
       bingo = await Bingo.findOneAndUpdate(
         { _eventId: id },
         { $set: update },
-        { new: true }
+        { new: true },
       );
     }
 
@@ -181,4 +185,4 @@ export async function updateBingo(req: Request, res: Response) {
   } catch (err: any) {
     return res.status(500).json({ success: false, error: err.message });
   }
-}
\ No newline at end of file
+}
diff --git a/shatter-backend/src/controllers/event_controller.ts b/shatter-backend/src/controllers/event_controller.ts
index 9d1468b..f9613bc 100644
--- a/shatter-backend/src/controllers/event_controller.ts
+++ b/shatter-backend/src/controllers/event_controller.ts
@@ -94,10 +94,9 @@ export async function getEventByJoinCode(req: Request, res: Response) {
         .json({ success: false, error: "joinCode is required" });
     }
 
-    const event = await Event.findOne({ joinCode }).populate(
-      "participantIds",
-      "name userId",
-    );
+    const event = await Event.findOne({ joinCode })
+      .populate("participantIds", "name userId")
+      .populate("bingoGameId");
 
     if (!event) {
       return res.status(404).json({ success: false, error: "Event not found" });
@@ -311,10 +310,9 @@ export async function getEventById(req: Request, res: Response) {
         .json({ success: false, error: "eventId is required" });
     }
 
-    const event = await Event.findById(eventId).populate(
-      "participantIds",
-      "name userId",
-    );
+    const event = await Event.findById(eventId)
+      .populate("participantIds", "name userId")
+      .populate("bingoGameId");
 
     if (!event) {
       return res.status(404).json({ success: false, error: "Event not found" });
diff --git a/shatter-backend/src/models/bingo_model.ts b/shatter-backend/src/models/bingo_model.ts
index 8ba81b3..5fdfe99 100644
--- a/shatter-backend/src/models/bingo_model.ts
+++ b/shatter-backend/src/models/bingo_model.ts
@@ -10,7 +10,6 @@ export interface BingoDocument extends Document {
 
 const bingoSchema = new Schema<BingoDocument>(
   {
-    _id: { type: String },
     _eventId: {
       type: Schema.Types.ObjectId,
       ref: "Event",
@@ -24,11 +23,4 @@ const bingoSchema = new Schema<BingoDocument>(
   }
 );
 
-bingoSchema.pre("save", function (next) {
-  if (!this._id) {
-    this._id = `bingo_${Math.random().toString(36).slice(2, 10)}`;
-  }
-  next();
-});
-
 export const Bingo = model<BingoDocument>("Bingo", bingoSchema);
diff --git a/shatter-backend/src/models/event_model.ts b/shatter-backend/src/models/event_model.ts
index 04dc55f..43c4918 100644
--- a/shatter-backend/src/models/event_model.ts
+++ b/shatter-backend/src/models/event_model.ts
@@ -13,6 +13,7 @@ export interface IEvent extends Document {
   participantIds: Schema.Types.ObjectId[];
   currentState: string;
   createdBy: Schema.Types.ObjectId;
+  bingoGameId?: Types.ObjectId | null;
 }
 
 const EventSchema = new Schema<IEvent>(
@@ -29,10 +30,15 @@ const EventSchema = new Schema<IEvent>(
       type: Schema.Types.ObjectId,
       required: true,
     },
+    bingoGameId: {
+      type: Types.ObjectId,
+      ref: "Bingo",
+      default: null,
+    },
   },
   {
     timestamps: true,
-  }
+  },
 );
 
 // Optional validation: ensure endDate is after startDate
diff --git a/shatter-backend/src/routes/bingo_routes.ts b/shatter-backend/src/routes/bingo_routes.ts
index 2e9238f..f89a4b5 100644
--- a/shatter-backend/src/routes/bingo_routes.ts
+++ b/shatter-backend/src/routes/bingo_routes.ts
@@ -1,16 +1,17 @@
 import { Router } from 'express';
 import { createBingo, getBingo, updateBingo} from '../controllers/bingo_controller';
+import { authMiddleware } from '../middleware/auth_middleware';
 
 const router = Router();
 
 // POST /api/bingo/createEvent - create new event
-router.post('/createBingo', createBingo);
+router.post('/createBingo', authMiddleware, createBingo);
 
 // POST /api/bingo/getBingo - get bingo details
-router.post('/getBingo', getBingo);
+router.get('/getBingo/:id', getBingo);
 
 // POST /api/bingo/updateBingo - update bingo details
-router.put("/updateBingo", updateBingo);
+router.put("/updateBingo", authMiddleware, updateBingo);
 
 
 export default router;