Nibbles is a game where the user controls a worm. The worm moves around the board, eating diamonds while avoiding the walls placed around it.
To run Nibbles, select Games ▸ Nibbles from the Applications menu, or type gnibbles on the command line.
Nibbles is included in the gnome-games package, which is part of the GNOME desktop environment. This document describes version 2.20 of Nibbles.