The viruses are common hazards found scattered around the map. Smaller cells can hide in the viruses. However once the player gets too big, they become harmful, breaking cells that collide with them into smaller pieces, leaving them vulnerable to bigger cells. New viruses can be created by ejecting 7 pieces of mass into them, this can be used to destroy bigger cells.
Viruses are green balls with spiked edges.
Removed dark viruses
In Experimental Mode 5% of the viruses were a little larger and a bit darker on 2015-06-11, they were removed the next day.
- In some cases they are actually helpful, smaller players can hide in them to escape large cells, or wait and ambush smaller cells.
- While the exact number is unknown, there is actually a limit to how many viruses can be on a server at once. If there are too few viruses, they will begin to spawn randomly throughout the map, if there are too many, ejected food will pass right through them so players cannot create new viruses.
- In addition to the common green viruses, there are also red viruses. They are only found in experimental mode and are somewhat rare. They create food and can trap cells inside them and turn them into food for other players.