If the series moves onto Half-Life 2 as well...
If the series doesn't move onto Half-Life 2...
Gordon is a robot.beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep... beep...
The series will end with Gordon taking the Bolivian Army Ending "No regrets, Dr. Freeman" offerIt's completely in character for Gordon to do (why would he listen to some guy in a suit?), and provides a Conan Doyle style way for Ross Scott to not have to do one for Half-Life 2.
Freeman's Mind is canon to the Half-Life/Portal Universe.It doesn't dispute anything previously laid down by the games so why the hell not?
Freeman's Mind is the Team Fortress timeline version of Half-Life.Incompetent workers and soldiers? Less-than-ideal but still entertaining hero? Ridiculous architecture? Just give it a splash of TF 2 paint and it matches!
Doomguy's Mind: Episode 7 was a representation of how much Ross himself wanted to get back at Machinima.Considering how badly he was treated by the company before he had left, would it be any real surprise if that was the intention to show how much steam he had built up?
Chell will go completely insane.She's under immense psychological stress, and she wasn't that sane to begin with. It's easy to imagine her laughing maniacally as she destroys GLADoS.
If Chell's Mind moves on to Portal 2, Chell will become a satire of Gordon.Chell will constantly rant on how hard it is to get out, how stupid/insane the scientists were, and how everything is trying to kill her.
Gordon is really being stalked by the mailmen, owls really are telepathic, and there really is a race of anthopomorphic frogmen living in the sewers.Because, after everything else, would you really be suprised if it were all true?
Barney hates Lamarr because of what happened in Barney's Mind.If you were to make a drinking game out of how many times he's gotten attacked by headcrabs, you would get alcohol poisoning by episode 10.
The harmonic reflux loop at the end of Barneys mind was temporal as wellI mean, He not only got phased into Half-Life 2: Episode 1, and then teleported into sector C, were Shephard teleported into Freeman's locker. Which that happened AFTER Freeman went to Xen at that point in time, only for Barney to teleport somewhere else and see Gordon get dragged off to the trash compactor (Which obviously occured BEFORE Gordon went to Xen)
It's all in Gordon's head.He spoke of taking some oxycodone before the experiment and could have easily overdosed, forgetting about taking them whatsoever.
Episode 10.5 is canon with the rest of the episodes.Gordon fell to his death, but then the player just reloaded a quicksave and thus he's alive again. Gordon doesn't actually know that he's just a video game character, so is a bit deja-vued at first before forgetting what happened since the part of the RAM that contains his memory was overwritten.
Chell's Mind is canon.Lab Rat, more or less, legitimized a lot of Chell's characterization, like her stubbornness, and her sociopathic tendencies. Plus, it draws a lot of similarities between her and Rattman.
Gordon is actually speaking out loud the entire time.
Black Mesa is designed to kill it's employees in the case of an emergency.The owner and/or government agency that runs the place makes sure the kills as many witnesses as possible. The people running the show have some idea of the horrors that could be brought to Earth with the various experimental technologies they have, it would be easier to contain the public panic of "alien invasions" if nobody lived to tell the secret.
Adrian Shepard's vocal appearance in Point Man's Mind is canon with the other mind series.After murdering Black Mesa, the top military contract went to ATC. Adrian is of course, overseeing a joint operation with F.E.A.R. Etc. Etc.
By the time he gets to Xen, Freeman will become fully Ax-CrazyHe won't question anything about where he is, and will just march through Xen like it's no one's business.
Freeman is a reincarnated Hitler.They've both been in Austria, they were both involved in a major war (directly or indirectly), they both ended up with illusions of grandeur from their experiences, and they both have cool facial hair.
Episode 58 (as well as any further episodes covering Uplink) are hallucinationsFreeman is hallucinating the events of Half Life: Uplink due to the side effects of mixing morphine and teleportation. Once Freeman gets to the unwinnable fight with the Gargantua, he'll snap out of it, and wake up on the moving platforms after having passed out.