Half-Life 2 - 1998. HALF-LIFE sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling. Valve's debut title wins more than 50 game-of-the-year awards on its way to being named 'Best PC

Steam\SteamApps\common\Half-Life 2\hl2\save Steam\SteamApps\common\Half-Life 2\episodic\save Steam\SteamApps\common\Half-Life 2\ep2\save Copy the entire content of these folders to a safe place somewhere for safety resons just in case something goes wrong

ABH is the ability to jump backwards and gain incredible, unnatural speed. Hl2 and Eps, Portal 1 - NOT Portal 2, L4Ds, TF2 or Counter-Strikes Gmod has been patched.