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.

New Test build for Half-Life 1 detected - 25th Anniversary Update/Steam Deck optimizations incoming? : r/HalfLife

Half-Life gets a surprising free update for its birthday

How Valve Finally Fixed a Half-Life Bug That's Almost as Old as the Game Itself - IGN

Valve makes Half-Life games free until Alyx release

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

Half-life 25th Anniversary Update news - ModDB

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

How Valve Finally Fixed a Half-Life Bug That's Almost as Old as the Game Itself - IGN

Half-Life turns 20, and we all feel very old