Half-Life 2 turns twenty today. Released on November 16, 2004, Valve's followup to its groundbreaking 1998 original was the quintessential sequel, built upon what was already a recognized landmark title in gaming. Half-Life 2 went even further, and became an arguably greater touchstone itself. With the seamless way it continued the narrative, fleshed out its memorable setting and characters, and fine-tuned gameplay, Half-Life 2 earned multiple accolades, achieving the status of a widely beloved title, and its legacy truly cannot be denied.