TL;DR: Half-Life 2 celebrates its 20th anniversary with Valve releasing a major update that includes Episodes One and Two, a new 3.5-hour developer commentary, integrated Steam Workshop support, and ...

Just as Half-Life 2 turns 20, Valve has released a massive update that combines the base game and all episodes, while also adding cut content, Workshop support, developer commentary and more features.

In Half-Life 2 you again pick up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling ...