The development team behind the popular Half-Life remake Black Mesa has officially released the missing Xen chapters. The chapters were available in beta testing for several months.
The release of the Xen chapters means the popular remake of the original Half-Life now has all chapters available to play through. Those who have played in the past will have noticed the story stopped on the 14th chapter Lambda Core.
The Xen update now introduces all missing chapters, including Xen, Gonarch’s Lair and Interloper. The development team notes that "If you have been holding out for Xen, this is what you have been waiting for."