Mozteroids is a variant of the computer game classic, 'Asteroids'. The idea of the game is to destroy the incoming asteroids before they destroy you.

It is designed exclusively for use with Mozilla, the open-source browser from Netscape, although it will also work with NN6 and other variants. This also means that Mozteroids will run on any platform that will run Mozilla.

The user interface has been designed using Mozilla's Cross-Platform Front End (XPFE), and uses the XML User-Interface language (or XUL) and Javascript to create the front end.