- "Bowling for Bile," a mode where any special zombie can have a bile effect on a survivor if they can chock/ride/pin a survivor for 12 or more seconds.
- "Dirty Mouth," a mode where the tank, rather then being able to throw a boulder, can instead either spit bile or acid.
- "Bombing on a Budget," a mode where the government have decided to bomb out your location for the greater good. However, do to the rather unexpected spread of zombies, they are unable to get to any of their typical ordinance, thus they have to go with a much cheaper solution. Basically molotov raining form the sky at random.
- "Wolf in Human Clothing," a mode in which one surviver has been bitten, but being the selfish jerk that they are, has decided to keep that fact hidden from the rest of the group. Basically at some random point one surviver per level gets turned into a special infected.
- "Improvised Weapons," since the survivers are ins such a rush they don't take the time to check the quality of there melee weapons. Thus each melee weapon has a random breaking point.