Details on a range of games that were in development by Valve between the release of Half-Life 2: Episode 2 and Half-Life: Alyx have been revealed in a new documentary, including Half-Life 3 and Left 4 Dead 3 (via IGN).
In the documentary, called Geoff Keighley's The Final Hours of Half-Life: Alyx, it was explained that Left 4 Dead 3 would have featured an open world set in Morocco, with the potential for hundreds on the zombies on screen at a time. Unfortunately, it was shelved due to the company's unfinished Source 2 engine.
It was also mentioned that another take on the Left 4 Dead franchise codenamed Hot Dog was in development at one point, but no further details were revealed on this.
Unfortunately, it looks we won't be getting any more Left 4 Dead games anytime soon, but original L4D developer Turtle Rock Studios is currently working on Back 4 Blood, which is said to be "marrying the best of what made [Left 4 Dead] so successful with new features and state-of-the-art technology."
Are you disappointed we never got Left 4 Dead 3? Let us know your thoughts in the comments below.