The ultimate purpose of Hayden's journey is unclear, but seems to involve him and his kind coming to Pluto which will lead toward some unknown, darker destination known as the dark sector. In the preview video, Hayden assaults an enemy marine ship and manages to plant an explosive on one of its control panels. He's discovered and is forced to fight his way out. In the process of escaping, he utilizes his various suit powers, most of which seem to involve special panels on his palms which he targets at objects to manipulate them or pull himself toward them. The escape culminates in a boss fight with a crustacean-like robot. Hayden renders himself invisible to the robot's sensors and plunges a device into its head that changes its allegiance. The robot proceeds to mow down the rest of the pursuing marines with its dual machine guns. Hayden then exits the ship and watches it explode from afar. Throughout Hayden's escape he's in radio contact with a squad mate on a separate ship and this may factor into the gameplay with Hayden getting his behind the scenes information and objectives via communications link.

Whether the game will be played from a first person, third person, or hybrid perspective is unclear. The game was displayed as a cinematic vignette, showcasing Hayden's escape from various cinematic camera angles. Not much can therefore be said about the user interface. Despite the cinematic aspect of the presentation, the graphics appeared to be rendered in real time. The game sports highly detailed textures and dynamic lighting that help flesh out the dank, shadowy atmosphere in which Hayden lurks. In terms of animation the game seems lacking. Characters move stiffly, as if their joints were choked with crazy glue and they were straining to flex them to their full extent. Facial animation is also lacking, with a limited number of expressions and clumsy lip-synching.

The soundtrack is appropriately eerie, full of creaking metal, hissing steam, whispering and the humming of electronic equipment, though the gunfire sounds far too muted. In one scene where a soldier fires at Hayden it sounds more like Jiffy-Pop than bullets and gunpowder. Despite the sound, marines are sill blown back with an appropriate force after getting peppered with bullets.

With a range of cool gadgets at the player's disposal and a variety of unique powers available via Hayden's suit, Dark Sector is a stealth action adventure worth keeping an eye on.