Tom Clancy's The Division, released in 2016, built its Dark Zone around uneasy cooperation, letting players team up for loot while also giving them the option to attack other agents. Doing so marked them as rogue, turning every nearby player into a potential enemy and making extraction far riskier. That mechanic became one of the game's most talked-about features, and its warning sound travelled with clips of betrayals, ambushes and narrow escapes shared by players online. It remains useful today because it instantly signals broken trust without needing any explanation.