Dark Sector is a video game developed by for the , and .
The game is set in the fictional country of Lasria, and centers on protagonist Hayden Tenno (voiced by ), a morally ambivalent "clean-up man". While trying to intercept rogue agent named Robert Mezner, Hayden's right arm is infected with the fictional Technocyte virus, which gives him the ability to grow a three-pronged "" at will.
Dark Sector received mixed reviews for its visual design, originality of action and weapon-based gameplay. Many critics have compared the game to and , for their similar style of play and story.
Gameplay of Dark Sector revolves around the use of the Glaive, a tri-blade throwing weapon similar to a boomerang which returns to Hayden after each throw. The Glaive can be used for long-distance combat, solving environmental puzzles, and picking up in-game items. When in close proximity to an enemy, context-sensitive actions may appear, allowing the player to execute enemies with "finishers". Enemies hold onto Hayden while attacking, and the player must rapidly press a randomly prompted button to break free.
Environmental puzzles in the game usually focus upon capturing various elements (fire, electricity, or ice) with the Glaive. For example, a web blocking Hayden's path can be bypassed by capturing fire with the Glaive, and then launching it at the web to burn it down. The Glaive can also be dual-wielded with a gun, which allows the player to perform weapon combos which are more effective against shielded enemies. As the game progresses, Hayden and the Glaive are given several new abilities; it can be guided through the air, being able to kill multiple enemies; a charged-up throw for deadlier attacks; and the ability to make Hayden invisible for a short time and provide a temporary shield