Virus Defense is the first tower defense style game for your Palm Pre or Pixi. You are tech support for We-B-Geeks and your job is to stop an onslaught of attacks on your customers PC. Virus, bots, worms, Trojans attack and you have to throw up basic Defense Code to stop them. You can choose firewalls, anti-virus code, cleaners, shields and blockers to aid you in stopping these attacks. The only problem is you have a limited amount of memory to use to run your Defense Code. Every piece of code requires a certain amount of memory but you are so overrun with these bad viruses that you can only run very basic Defense Code to begin with. As you destroy the creeps you free up a little bit more memory each time and you can install even better and better Defense Code and upgrade to later versions.