2 Maps 深灰The Gray Beta N/A 四个幸存者偶然进入了一个地下遗迹,他们发现了一个白色方块试图将他们永远困在这里。 最后他们打败了方块成功地逃离。 Four survivors enter underground ruins accidentally,and they find a white cube wants to trap them forever. Finally they... Left 4 Dead 2