Infected Goo is a species of Goo in the video game World of Goo. They are either found, or made by firing Launch Goo into infected water. They can still be fired, but this time with an addition: they will automatically connect with a line structure if they get close enough and don't fly too fast. Therefore, this makes them similar to Water Goo, who possess the same ability to an extent, except Water Goo can also connect to the non-line structures.