GRAY GOO

Gray goo is one of the most destructive nanotechnologies in the universe. In its infancy the primary goal for scientist in the field of nanotechnology was to build nanites capable of self-replication. This seemed like a noble goal since millions of nanites are needed to perform a given task and creating nanites is incredibly difficult given their size.  Unfortunately, gray goo is generally one of the first successful nanocolonies that scientists learn to create, and in almost every case are completely unprepared for the results. Gray goo must be contained in a magnetic storage field or it will eat through almost any organized matter while it replicates itself.

This colony of nanites exists for the sole purpose of replicating itself.  The nanites within gray goo attack any organic or organized materials they come in contact with and convert it into additional gray goo nanites. In other words, any manufactured object or person that touches this material is consumed by it.  A few examples, gray goo will eat though armor, ceramics, clothing, plastic, sheet metal, or glass but will not consume disorganized materials like concrete or stone. Gray goo is not harmed by water and actively avoids contact with it.

Anyone touching or being touched by gray goo must attempt a CON saving throw (DC 30) for each round of contact. If the save is successful, the character severed contact before any damage was done. If the save fails, the nanites have gotten into the character’s system. The character takes 1 point of ability damage to all their ability scores every 10 minutes. When the character’s Constitution score is reduced to 0 they are irretrievably killed and completely transformed into gray goo. The only way to prevent this is to amputate any portion of the body that has come in contact with the gray goo nanites (see 3.7.104 WOUNDING ).

Fortunately, gray goo is extremely slow and it only moves 5 feet per round.  Gray goo does not have to roll to hit simply occupying the same space requires a saving throw.  It will always attempt to consume the closest source of material for replication and will not chase a potential victim past an easier source of raw materials. 

Gray goo nanites are immune to all energy and kinetic attacks.  The only known surefire way to destroy it is by introducing nano-hunters to the colony.

Blue Goo: Blue goo is a derivative of normal gray goo but it only consumes organic matter otherwise its identical to gray goo.  Blue colonies were developed as a weapon of mass destruction.  It had one purpose, to eliminate all enemy personnel but leave the base and equipment intact.