One of the fortunate things about the Amiga being a Minor platform is that Viruses are not really a problem anymore. If you want AV software then i think the latest is VirusZ and that can be found on Aminet. As for 1.3 games working under 3.0 under normal circumstances if you enter the Early startup and fiddle with the settings if a game doesn't work then that usually helps, Alternativly if you have a HDD you can get a WHDload install package for most games and install the gam,e onto your HDD