There are several versions of the Dark Trooper. In games that feature the three phases such as Star Wars: Empire at War: Forces of Corruption or in Star Wars: Dark Forces the dark trooper is a high-tech battle droid, developed by the Galactic Empire. In other games such as the Battlefront series, the dark trooper is an ordinary trooper in more sophisticated armour. In Star Wars: Dark Forces Kyle Katarn destroyed the Arc Hammer, the development facility of the Dark Trooper.
There are three stages to the Battle Droid Dark Trooper:
The Stage 0 Dark Trooper appears in both Star Wars: Battlefront and Star Wars: Battlefront II. In Star Wars Battlefront, they are armed with blast cannons. However, in the second game, the trooper is armed with an ARC Caster, which shoots bolts of electricity that generally kill an enemy in one shot, and can be charged up to chain to multiple enemies. It is a useful weapon against Jedi, as it cannot be blocked. This trooper also uses a Jump pack.
In Star Wars: Dark Forces, Kyle Katarn must locate and destroy the facility that produces the Dark Troopers. Along the way he must face several of the droids himself. There were several stages of production, and Kyle needs to face the first stage, which was little more than a robot with a saw and the last stage, which is a fully armed and armored Dark Trooper with its heavy weapon.