Draft, annotate, and design 2D geometry and 3D models with solids, surfaces, and mesh objects Automate tasks such as comparing drawings, adding blocks, creating schedules, and more. AutoCAD ® is computer-aided design (CAD) software that architects, engineers, and construction professionals rely on to create precise 2D and 3D drawings. If you have this problem, just press Ctrl while clicking the game icon, and select Open.Alternatively you can use the “Open Anyway” button in the General pane of Security & Privacy preferences.