.hack//Mutation is a role-playing video game developed by CyberConnect2 and published by Bandai for the PlayStation 2. It is the second installment in the .hack series, continuing the story of Haseo, a player in the fictional MMORPG called The World. The game features real-time combat and a unique blend of action and strategy as players navigate through various quests and battles. In .hack//Mutation, players explore new areas, encounter different characters, and uncover deeper mysteries within the game world. The narrative focuses on themes of friendship, betrayal, and the impact of virtual reality on real life. Players can also collect items, level up their characters, and engage in multiplayer elements, enhancing the overall gaming experience.