Half-Life 2: Episode 3 – The Closure

Half-Life: The Closure is an unofficial modification for Half-Life 2: Episode Two. Description Edit The modification is quite lengthy, consisting of thirty-two parts. The mod continues the plot of Half-Life 2: Episode Two, beginning with Alyx crying over the body of her deceased father. Afterward, Alyx becomes gravely ill and is unable to leave her bed. Magnusson needs Gordon to find the missing Dr. Kleiner, last seen talking about an attempt to blow up the Borealis. 

See also:

Half-Life 2: Combine Combat

Half-Life 2: The Masked Prisoner

Half-Life 2: Mission Improbable