In Dark RP, every player chooses an identity, and their only objective is to fulfill the goal of their role. Simply put, it's a roleplay game mode.
Players can be burglar, a thief, and even a prostitute. There's a ton of roles to choose from. Each one makes a different amount of money per hour, and the player is free to choose what they want to do with that money. They can either buy weapons, equipment, or trade.
The mod pretty much symbolizes the limitless potential Garry's Mod has to offer. Come on, a game mode where you can roleplay as a prostitute and have it be fun?
Never in your wildest dreams.