Mysterious new Half-Life app appears on Steam before 25th anniversary

Half-Life suddenly becomes a free game, but then Valve changes that, and then a new, mystery Half-Life app appears on Steam out of nowhere.

A new, mysterious Half-Life app just appeared on Steam : r/Games

Half-Life on Steam

Half Life 25th Anniversary Update - All New Features - News

Half-Life triples its own Steam record after big Valve update - The Tech Game

Half-Life gets a surprising free update for its birthday

Half-Life Turns 25, Relive the Legend with 25th Anniversary Update, Now on Steam

Half Life's Big 25th Anniversary Update Is FREE With New Maps And Enhanced Graphics

Black Mesa is in the Half-Life section of the steam sale which is pretty cool : r/Steam

Half-Life 25th Anniversary and TFC : r/teamfortressclassic