From a technical standpoint, Aperture Science and the Combine go together like peas in a prisoner pod. There are some startling similarities between their weapons and equipment that may point to an unseen element of the story.

Fallout 4 has just been announced and there’s still no Half-Life 3 on the horizon. With no new content, fans have to create their own fun. Fan theories are an excellent way to revisit old material and put a new spin on it. So I present an hypothesis:

Chell and Alyx Vance might be related.