Senior 3D Environment Artist, Liam Tart, might be working on an unannounced game with The Creative Assembly (the developers behind Alien: Isolation), but that doesn't mean he can't dabble with other games on the side. Tart has re-created a scene from Half-Life 2 in Unreal Engine 4 and it's fully playable. The scene even works with the Oculus Rift virtual reality headset… So you can basically live your dream of immersing yourself in a Half-Life game.
The Half-Life 2 scene was brought to life by Tart as part of a project to alter his work pattern from being "a traditional Photoshop-based texture creation process, to a fully procedural Substance material creation process." with Substance Designer and Painter.
Whether or not Tart will add on the re-created scene remains unknown, but we do know that he's no stranger to the Half-Life series. Back when Tart first got into video game development as a Level Designer, he lent his skills to The Crowbar Collective, helping develop the Half-Life mod Black Mesa. However, the mod is no longer a true mod – it's making a standalone release on Steam Early Access in the near-ish future.
You can download and play the scene here or see more of this creation here.
(Is this the closest we will get to Half-Life 3?)