

In Laidlaw’s outline, this other cancelled Half-Life VR game, itself codenamed Borealis, would see players explore the vessel as it travelled through time. The Half-Life cast theorizes it may carry a powerful weapon, but are undecided on whether to find it and use it or destroy it. The Borealis was an Aperture Science Research ship detailed in Half-Life 2’s two expansion episodes and even to some degree in Portal 2. That name carries a lot of weight in both the Half-Life and Portal canon. Spoilers for Portal and Half-Life games including Alyx below.
This project would, apparently, be set aboard a ship named the Borealis. Series writer Mark Laidlaw had taken a small team to work on a new VR game set in the Half-Life universe, running on Source 2. The second project, however, sounds much more ambitious, though never got very far. A video in the app shows some basic gameplay. Final Hours states that the project was ultimately pulled from release over concerns Valve wouldn’t be able to finish it in the project’s limited eight-month development window. Shooter consisted of a series of small gunfights that would offer more of an experience than a full game. But another demo called Shooter was also being developed and, according to Keighley, clearly set in the world of Half-Life 2’s City 17. The Lab is a bundle of free minigames including references to Valve’s Portal series.
