Times of Troubles 1.2

Times of Troubles is a single-player modifaction for Half-Life 1 containing seven new maps taking the player once again through the Black Mesa Research Facility.
The story takes place after the scientist in the Lambda Complex tried to teleport you to the borderworld, e.g. Xen. In the alternate timeline of Times of Troubles the scientist who teleports you mixed up the coordinates and teleports you into another part of Black Mesa.