Needing Some Space... | Portal 2 - Finale! 

hey! can highly recommend using these settings, for a better experience: For Half-Life 1, Opposing Force, and Blue Shift, start with the TRAINING ROOM in EACH one. In the "Content" settings, enable the original models. Also, in the "Aim" settings, turn OFF "Auto-Aim" and turn ON "raw mouse input" and "lower input latency". Also make sure that "mp3" (music) is turned up to the middle. And in the "video" settings, turn down the "gamma" to about the same level as the brightness.