In addition to the video from the Valve News Network, there are also the two folders called ‘left4dead3’ and ‘hl3.’ There are also lines of code referencing “Half-Life 3” and a potential quest system.
However, the Valve News Network pointed out that the Source 2 engine contains a great deal of stuff ported over directly from the old engine, hinting at the possibility that those files and references could be previously seen things copied and pasted over again.
As far as the video demo of the HTC Vive VR, it also showed that Aperture Robot Repair demo featuring assets from “Half-Life 2” and “Portal 2,” albeit with no interactivity and fixed camera angles.
The code features the usual strings for ‘l4d3’ and ‘hl3’ but those are not uncommon and offers a little indication that the new games are in the works despite the fact that Valve Corporation has yet to make any official announcement or statement about those two highly-anticipated video games.
It can be recalled that Valve was not publishing its own developed games and had to answer to Electronic Arts (EA). So with the massive success of “Left 4 Dead,” EA wanted to immediately cash in on the title and pushed both Valve Corporation and Turtle Rock Studios to haphazardly develop “Left 4 Dead 2,” which came out just a little over a year later after “Left 4 Dead.”