- Valve employees want to build a 'full-scale,' non-VR Half-Life game PC Gamer
- Valve Failed To Make A Lot of Half-Life Games Before Alyx Kotaku Australia
- Valve's CANCELED Half-Life VR Games & Headset! UploadVR
- At least 5 Half-Life projects were cancelled before Alyx, including Half-Life 3 PC Gamer
- Half-Life: Alyx Helped Change Valve’s Approach To Development Kotaku Australia
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