What is gamcenter?

GameCenter is an online gaming service provided by Apple Inc. It allows players to connect with friends, compete against each other, and earn achievements in various games. The service was first released in 2010 and has since become a popular platform for mobile gaming on iOS devices. GameCenter also offers features such as leaderboards, multiplayer matchmaking, and in-game chat. Players can create profiles, add friends, and keep track of their gaming progress across different games. Apple discontinued GameCenter app in 2016 but the service is still available in many games.