Editing Killing Floor (modification) (section)

== Gameplay ==
{{main|text=See also: [[Killing Floor#Gameplay|Killing Floor]]}}
Killing Floor's Gameplay is designed around cooperative play, pitting players against a sinister version of the United Kingdom infested with large numbers of zombie-like "[[specimens]]". Available weapons range from pistols to shotguns to explosives, and players must arrange their group and adopt strategies to most effectively counter the [[waves]] of enemies, including  barricading themselves in or finding high ground.

The objective is to survive as long as possible against continual waves of enemies. The number of enemies in a given wave is calculated based on how many players are active. The number of enemies that they must defeat before the round ends is displayed on the [[head-up display]], and upon defeating the required number of foes the wave will end. Players collect money by killing specimens, with varying amounts gained per kill depending on the type of specimen. After a brief period during which players can visit the [[trader]] (who bears a different model than in the retail version) to spend their hard-earned cash, the next will begin, bringing more difficult foes. 

There are five difficulties: easy, the most forgiving setting; normal, a step up from easy but still not too much of a challenge; skilled, the median difficulty level; professional, which is notably difficult; and suicidal, the most challenging setting. Apart from the names of the different settings, this system is very similar to the one used in the retail version of Killing Floor.