diff --git a/backend/api/package-lock.json b/backend/api/package-lock.json
index d786a7e..2f317a3 100644
--- a/backend/api/package-lock.json
+++ b/backend/api/package-lock.json
@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
+        "cors": "^2.8.5",
         "express": "^4.18.2",
         "express-validator": "^6.14.2",
         "helmet": "^6.0.1",
@@ -308,6 +309,18 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/create-require": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
@@ -645,6 +658,14 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.12.2",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.12.2.tgz",
@@ -1347,6 +1368,15 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "requires": {
+        "object-assign": "^4",
+        "vary": "^1"
+      }
+    },
     "create-require": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
@@ -1604,6 +1634,11 @@
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
       "integrity": "sha512-+EUsqGPLsM+j/zdChZjsnX51g4XrHFOIXwfnCVPGlQk/k5giakcKsuxCObBRu6DSm9opw/O6slWbJdghQM4bBg=="
     },
+    "object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg=="
+    },
     "object-inspect": {
       "version": "1.12.2",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.12.2.tgz",
diff --git a/backend/api/package.json b/backend/api/package.json
index e553c95..6a62047 100644
--- a/backend/api/package.json
+++ b/backend/api/package.json
@@ -11,6 +11,7 @@
   "author": "jweissen",
   "license": "ISC",
   "dependencies": {
+    "cors": "^2.8.5",
     "express": "^4.18.2",
     "express-validator": "^6.14.2",
     "helmet": "^6.0.1",
diff --git a/backend/api/src/app.ts b/backend/api/src/app.ts
index 281b190..17361ac 100644
--- a/backend/api/src/app.ts
+++ b/backend/api/src/app.ts
@@ -1,6 +1,7 @@
 import express from 'express';
 import helmet from "helmet";
 import morgan from 'morgan';
+import cors from 'cors';
 import {leaderboardRoute} from "./leaderboardRoute.js";
 import {userRoute} from "./userRoute.js";
 import {gameRoute} from "./gameRoute.js";
@@ -10,6 +11,7 @@ const app = express()
 const port = 3000
 
 app.use(helmet())
+app.use(cors())
 
 // configure & use logger
 let morganFormatted = morgan('[:date[iso]] :method :url - :status')
diff --git a/backend/api/src/model/Time.ts b/backend/api/src/model/Time.ts
deleted file mode 100644
index 69cf57b..0000000
--- a/backend/api/src/model/Time.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export interface Time {
-    seconds: number,
-    minutes?: number,
-    hours?: number,
-    days?: number,
-}
\ No newline at end of file
diff --git a/backend/api/src/model/UserScores.ts b/backend/api/src/model/UserScores.ts
index 3e2e7bf..aefa123 100644
--- a/backend/api/src/model/UserScores.ts
+++ b/backend/api/src/model/UserScores.ts
@@ -1,10 +1,10 @@
-import {Time} from "./Time.js";
+
 
 export interface UserScores {
     userId: number,
     highscore: number,
     totalScore: number,
-    totalPlaytime: Time,
+    totalPlaytime: string,
     averageScore: number,
     gamesPlayed: number,
 }
\ No newline at end of file