But
graphical user interfaces (GUI), a concept which originated at Silicon Valley R&D unit Xerox Parc, incorporated icons and menus for
users to click on, as well as
various windows for different programs.
But primarily, to scale across the range of hardware performance levels, we went the PC route and provided more options to the end -
user: they can scale down the effective game resolution, turn off
various graphical effects, and even whole subsystems such as audio, to reduce the load on their phones.