Debug menu

Debug menus and rooms are used during software development for ease of testing and are usually made inaccessible or otherwise hidden from the end user.

Compared to the normal user interfaces, debug menus usually are unpolished and not user-friendly, intended only to be used by the software's developers.

The Cutting Room Floor (TCRF) is a website dedicated to researching and documenting hidden content in video games, including debugging material.

[2] In December 2013, Edge described the website as "the biggest and most organised" of its kind, and by that time it had 3712 articles.

For example, the hidden menu of the Samsung Galaxy S III has test functions for the vibrator, proximity sensor, sound, and other basic aspects of the phone.

Debugging display in Super Mario 64 . This display prints both current memory and CPU usage as well as information about the game's state.
Debug window in Gearheads that enables players to change the specifications of each toy