.hack//Infection is a role-playing video game released for the PlayStation 2 in 2002. It is the first installment in the .hack series, which explores a fictional MMORPG called The World. Players assume the role of Kite, a character who investigates a mysterious phenomenon causing players to fall into comas. The game features a mix of real-time combat and strategic gameplay, allowing players to form parties with AI-controlled characters. As players progress, they uncover the story behind The World and its connection to the comatose players. The game also includes an online component, enhancing the immersive experience.