tl;dr: Mac apps distributed as .dmg files typically prompt users to drag the app icon into an Applications folder shortcut, using a customized Finder window with a bitmap background as the design canvas. The author surveys creative examples of these "drag to Applications" screens, highlighting varied arrow styles, layout directions, instructional text, and 3D icon scenes, while pointing out gestalt pitfalls in designs that confuse hierarchy or directionality. Notable callouts include Firefox's consistently elegant installer and Inkscape's community-designed backgrounds for major releases.