Adventure. When clicked/tapped upon during building, it will change color, thus creating a system of individual releases yet multiple items at a time. For instance, you have a blue and yellow detacher. If you click on the blue detacher's button, only the blue ones will detach. The same goes for the yellow detachers. There are only 4 colors for the detacher: Green (default), Blue, Yellow, and Red. As of the "Custom Contraptions" update, the Detacher now comes in multiple styles, including Steampunk/Rusty, Bone, and Gold.