The story picks up with Jak being freed from the prison where Baron Praxis, the ruler of Haven City, tortured Jak with various Dark Eco experiments. Jak's friend Dexter frees him from the prison and together they embark on a quest to get revenge against the Baron. In addition to revenge, they venture to return home, which will in turn reveal to them the identity of the true heir to the throne of Haven City.
The game play in Jak II is fantastic, and easy to master. You maneuver through Haven City on foot, by Jet-Board and by a variety of other vehicles, each with their different advantages.
Jak himself can slip into a Titan Suit to help him move large objects, knock down barriers, and go over dangerous terrain.
A new addition making an appearance in Jak II is "Dark Jak". Dark Jak is the result of Jak being exposed to Dark Eco experiments. As Dark Jak, Jak turns into a powerfully crazed creature that is capable of unleashing massive destruction through devastating moves against multiple enemies at once. Also noteworthy is that there are four types of guns to be found in this game, just be sure to use them wisely.
The music and the graphics are excellent, and you will keep coming back to play more, and try to complete all your missions as quickly as possible.