Half Life 2 VR have green light on steam. Remember, Half Life 2 was one of the very first games that was compatible with VR. Its VR support, although is impressive for the time. But it is far from successful, so much so that it is mainly used to test its resistance to motion sickness today. And yes, between its keyboard / mouse handling and its repeated loads, it is difficult to hold more than 20 minutes in VR despite the quality of the basic game.