I know that game was a complete train wreck. At the time it was touted as having a story that would be considered canon. Is that still true for the purposes of this RPG?
I want to point out some issues with that games story being in any way official.
-Hicks is alive on LV426 and a captive of Weyland Yutani. ... Wut? They never actually explain how Hicks got there from the Sulaco. They just hand wave it away as "A story for another time". The person who who was still alive should have been Hudson. How good would it have been if he got pulled through the floor grates but managed to survive? The guy who said "17 days! I've got a news flash for you, we ain't gunna last 17 hours!" managed to survive on his own for the whole 17 days?
-The nuclear reactors of Hadleys Hope blew up at the end of Aliens wiping the site off the face of the planet. ... And yet you go there and walk around it 17 days later without suffering from drastic radiation poison or you know... the whole place being a pile of rubble? It even still has power!
Aliens Colonial Marines isn't all bad.
It gets a lot better when you have the DLC stasis interrupted.
Hicks is alive then, and it is explained how he stayed alive, woke up and did stuff, and it actually makes LOT of Sense, also it makes a lot of sense to explain how there was still a body in Alien 3 in Hicks hypersleepchamber
Also you find hudson later in the game... in chapter 5, quite early.
He is pinned to the wall and has given birth to a thing.
Next thing... hadleys hope is pretty ragged up, but behind a lot of hills and such, which have taken the brunt of the nuclear explosion.
The radiation from nuclear bombs comes from the fissible atoms aka uranium and plutonium. there are no such isotopes in a fusion reactor, that needs helium-3, deuterium or tritium.
but well, doesn't matter - the game takes place in a matter of hours, and since we learned from chernobyl (series) you can watch right into a reactor core and play cards 3 days later (before you die and get burried under concrete!) ;D
Since none of the plotlines from Alien: Colonial Marines are ever touched again, it can still be canon, since it doesn't interfere with anything else.
this is just a matter of your personal choice if you ask me.
Considering the Alien: Isolation Plotlines...
well there are these audiblebooks (which is pretty much an audio play... and it is really well written and voice acted)
they mention them in
Alien: out of the Shadows
and
Alien: Sea of Sorrows
Tbh, i find it quite funny where they find all these alien hives in the first place, on several different planets and other locations.
these things are like a plague, and tbh, everything involving the creators from alien covenant and whatever... is just doing them no justice.
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Addendum.
Just got my hands on the preorder cinematic starter kit and read the timeline.
The question was, is Aliens Colonial Marines still considered Canon.
And the answer i can give is: definetly yes.
All the Timeline states to the LV 426 and Fiorina incidends is 'reasons unknown'.
which is true for the general public, and since they made sure that there are not many survivors and there were no transmissions in the movies, they reasons stay unknown.
and W-Y will certainly not go and tell everyone about them ;D
And what Morse said, is considered fanfiction or a new religious text, if you take the timeline into account.
that's quite funny
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