A Gestalt Engine is an advanced piece of technology that utilizes a link between the machine and its pilot, allowing either the pilot to control the machine with their thoughts or (in rarer cases) allows the machine to "override" the pilot's brain and put them on "auto-pilot" mode.

Gestalt-Engines are heavily monitored by the Brotherhood Of Suns to avoid misuse and also to try and ensure that disasters such as R.A.G.E. do not occur again.