Virus Killer

Virus killer is an arcade-style game where you have to protect your files from hordes of viruses that come from various Microsoft products.

The game is pretty fun, although it gives you a sore wrist after a while as you're trying to zap all the little things from getting your files. It is really simple to learn, the interface involves left-clicking-and-holding, or right-clicking. You can read the instructions, but it is pretty easy to get the hang of things as you're playing.

Main Page: http://www.parallelrealities.co.uk/virusKiller.php
Download: Download Page
Ubuntu: Available through Synaptic.