Black Mesa's full Xen chapter and ending is now playable in beta

The first chapters of Black Mesa’s Xen entered public beta in June and they’ve added more over past few months.

A new public beta build of the Valve-sanctioned Half-Life fan remake unveils the final chapters of Xen, the alien world much-maligned in Half-Life and absent from the initial release of Black Mesa.

After fifteen years of development in one form or another, Black Mesa is almost finished.