FillR is a gamified mobile event application that utilizes real-time geo tracking, quick response codes, gyroscope and API integrations. It’s an application that enable organizers to incorporate event-based games into the event they created. In the application, users can create events or join events. After joining an event, users are prompted to make a squad with other attendees to participate in event-based games and achieve mission objectives. While those who created an event, organizers are redirected to a website where they can select the game suited for the kind of event and then, organizers are prompted to open or download the application. The application’s sole purpose is to enhance the event experience by creating consistent momentum from the start and end of the event using event-based games. This study aims to develop an event application that integrates mini games that uses different technologies that enhances event experience. This research will cover the varying technologies employed in the development such as geo-tracking, gyroscope, and APIs. To execute the source codes, Android Studio and Visual Studio Code were used. These IDE’s utilizes programming languages such as Java, Kotlin and PHP which are the languages used by the researchers.