Overview
The GP2X was designed to play music and videos, view photos, and play games. It had an open architecture (Linux based), allowing anybody to develop and run software. Also, there was the possibility for additional features (such as support for new media formats) to be added in the future due to the upgradeable firmware.
A popular use of the GP2X was to run emulators, which allows one to use software from a video game of another system on the GP2X.
Read more about this topic: GP2X