WinAmp 5.5 (included game)

A user of the WinAmp media-playing software might have idly double-clicked on the logo of the new Bento skin from the skin browser in the application's preferences without expecting anything to happen.

Performing the indicated action opens up a surprise, easter egg session of the game known by many as Nibbles, Tron: Light Cycles or Surround for the Atari 2600; the player controls the growing wriggler in this snake game. The goal is to avoid all walls and obstacles in the pursuit of llamas on the play field. Through every level 9 llamas will appear, each one arriving after the prior one is caught. Helpfully, they are fully four times bigger than the grid cells, making them easy to catch. That said, as with all snake games, the player grows every time a llama is eaten, and the player's biggest collision risk eventually becomes the player's own tail.

Upon level completion a new level is started, the worm reduced back down to a neat, short length and a new, more complicated wall layout superimposed on the llama-whooping grounds.