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Since the Screamer was under physical restraint, he did not have the ability to mount any direct attack on Survivors.Īs stated in the Developer Commentary, Screamers and Boomers co-existed for a time during development. It was therefore important for the players to kill the Screamer before he could escape and call a horde. If he succeeded in escaping, he emitted a loud scream that alerted a horde, causing an attack - thus, foreshadowing the later Boomer bile concept, and additionally helping to establish early on in production that the Common Infected are driven to extreme aggression as a response to loud noises. The idea for the Screamer was for him to lurk in different areas, much like the Witch, paying no attention to his surroundings until coming in contact with a Survivor whereupon, if sufficiently agitated, he would run away from Survivors in an attempt to hide.
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Screamers were presented in-game as Infected humans bound in a restraining psychiatric-style straitjacket. As such, he is the progenitor of Special Infected like the Witch and Boomer. The Screamer was a prototype for Special Infected formulated early in Left 4 Dead 's development.
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