Half-Life 2: Year Long Alarm — Steam game overview

Stored observation / content update: 2026-11-06T23:19:13.000Z

Year Long Alarm is a Half-Life 2 single-player mod that is set in an abandoned mine outside of City 17. A Scanner has discovered you, and the Combine are closing in on your position. Fight your way through a vast underground mine to try and meet up with the Resistance members of Station 12.

Game metrics below are stored observations; missing values are unknown.

Revenue is modelled, not confirmed sales. See the methodology and uncertainty range.