While the first Jak & Daxter game featured a bright world with positive characters, Jak II is the opposite. The main character Jak is victim for the "Dark Warrior Program", which exposes him to a mineral known as "Dark Eco". After this, Jak gains uncontrolled power when he collects Dark Eco crystals. While trying to take revenge on the dictator of Haven City, Jak also helps out citizens in need. For example he saves a kid who were about to be executed for no apparent reason. It should also be noted that the player can - and most likely will through the game - kill civilian citizens and/or throw them out of their own car and steal it. No blood or gore, all killed enemies or characters vanishes into dust when killed. Players also has a tendency to start street wars with the local police forces, the Krimzon Guard, such wars can't go without civilian losses either. Jak uses four different guns and innumerable combos involving guns and fists to kill his enemies.
Several characters also frequently uses curse words, though not of the sexual type, and sidekick Daxter has a pervert mind, which is shown frequently in cutscenes (small in-game movies). In one cutscene, Daxter offers "help" in a bar and throws a lot of bottles around, drinking from some, this obviously makes him drunk. This scene is mostly for comical relief as Jak is just about to be sent out on an not-so-comical mission.
The controls are easy to get into and understand, and the player is led through a simple tutorial at the beginning of the game.
Overall, "Jak II: Renegade" is a game worth playing, with a dark, but well-written story about revenge and hate.