Chances are that Half-Life 2 and its expansions have been gathering dust on your Steam account for years now, so here's a quick refresher - mostly focused on the past five years - on what's available, single player-wise. Half-Life 2 is nearly fifteen years old now, and despite Valve's sequel plans seemingly fizzling out, it doesn't look a day over ten thanks to the efforts of modders. Every other Monday, Dominic gives you a reason to dust off one of your old games and dive into its mods with Modder Superior.