The Into Cerberon team are after a symbol for a Nanovirus so I though I'd have a crack. It would be used throughout maps to indicate areas affected by a nano-plague: dead zones and previously-infected sites, laboratories or secure storage areas that are studying the virus.
Things I took into consideration were the recognisable aesthetic of the biohazard symbol. People know that means "bad shit". I also steared away from the trefoil symmetry, adopting a 4 sided cross instead. The eye in the middle gives it a bit of sentience about it (at least it's supposed to).
*edit: Symbol made in illustrator. Just chucked it on a background texture for presentation so only concerned with feedback for the symbol itself.
Anyway here's some variants I came up with. Criticisms welcome.
[Blocked Image: http://i173.photobucket.com/albums/w57/m8nkey/virus01.jpg]
[Blocked Image: http://i173.photobucket.com/albums/w57/m8nkey/virus02.jpg]