Pac-Man World - Greatest Hits is a vibrant 3D platformer for the Sony PlayStation 1 where players control Pac-Man as he celebrates his 20th anniversary by navigating colorful levels loaded with puzzles and enemies. With its arcade origins, the game beautifully transitions into the 3D world with a mix of classic pellet-eating, ghost-chasing mechanics and new adventures that include boss battles, collecting keys, and rescuing friends. Its 'Greatest Hits' status signifies its popularity and acclaim within the PS1 library, offering fans and new players alike a compelling blend of nostalgia and fresh platforming challenges.