Valve is celebrating Half-Life 2’s 20th anniversary with updates including bug fixes, restored content, improved graphics, and Steam Workshop support. Episodes One and Two are now bundled, and it’s all free on Steam until November 18. There’s also a feature length documentary exploring its iconic development. Legendary.

An instant classic that dared to expand the lore of its predecessor to intriguing depths and flex how physics can be fun in videogames. Virtually flawless game design.