Milka Adventskalender — 24 Mini-Games App

Objective

Milka sought to enhance its physical advent calendar product with a digital companion that would drive daily brand engagement during the December holiday season. The mobile app targeted children ages 6-9 across German-speaking markets (Germany, Austria, France) with a seamless cross-platform experience that extended the calendar's value beyond the chocolate product itself.

Solution

A Flutter-based mobile app featuring 24 simple mini-games, each unlocked sequentially from December 1st. The games required minimal interaction—tapping animated objects, swiping across the screen, or shaking the device—allowing children to replay freely without scoring systems or competitive elements. The app was released in iOS and Android app stores in October, with game content deployed via update on December 1st to meet launch deadlines. Development by coreweb and design by isobar Vienna ensured high-quality implementation across three countries in two languages, supported by Firebase analytics.

Results

The campaign generated over 2 million game sessions. Analytics tracked open rates, update installations, and session counts via Firebase.