: If the file refers to the "2003 Leak," be aware that this is an incomplete development build with different NPCs and map layouts. Half-Life 2 RTX - Steam Community
: Some older versions (like Half-Life 2: Survivor ) require you to extract specific .gcf files (materials, models, sounds) into the same folder for the game to function properly. Important Safety and Compatibility Notes
: In most standalone versions, you will find a hl2.exe or a setup.exe in the main folder to launch the game.