Half-life 2 3in1 Multilanguage -no-steam- Free Now

But what exactly made this specific package so sought after, and why does it still spark nostalgia today? What is the Half-Life 2 3-in-1?

It packed voice and text files for multiple languages (English, German, French, Spanish, Russian) into a highly optimized format. Half-Life 2 3in1 Multilanguage -No-Steam-