Karen Lu developed real-time scoring and player-tracking features for the gtiosclub/iPlay repository, focusing on enhancing the in-game experience for both players and observers. She implemented a TimerView in SwiftUI to display elapsed time and update player points live, and extended the Player data model in Swift to include usernames, avatars, and points, supporting real-time data flows. Karen also built a ScoreboardScreen that presents a dynamic leaderboard with avatars, usernames, points, and ranks. By adding preview and test data, she accelerated QA and demonstration cycles. Her work leveraged iOS development skills, particularly MultipeerConnectivity, to enable accurate, responsive game scoring.