According to ESRB, this game contains: Animated Violence
Star Wars fans won't be disappointed because despite its flaws, Jedi wannabes will still love the force powers and the one-on-one lightsaber duels scattered throughout the game. Keep in mind that this is still the only decent Star Wars-based first-person shooter out there.
Quake fans don't have anything to worry about because even though Star Wars Jedi Knight: Dark Forces II has adequate multiplayer features (that feel more like an afterthought), the game's one-player mode is still where the goods are at. I will be expecting much more from the third installment, which is supposed to feature good ol' Obi-Wan.