Outer Wilds

So, the Nomai knew about the impending end of the universe, they go looking for the eye of the universe (unidentified signal) in the hopes of answers, happen upon the OW solar system, crash into Dark Bramble and shoot off 3 escape pods:
1 doesn't make it out of DB and all Nomai on board die while following the signal to the Vessel.
2 lands on Brittle Hollow, build the hanging city settlement and the South pole Observatory to try find the Eye. They mess about with the black hole at the core and build a space station near the white hole.
3 lands on Ember Twin, build the sunless city and high energy lab to perform experiements on how to find the Eye.

With their knowledge of warp tech, they build towers on the Ash Twin that enables warping to their corresponding planets and build the ash twin project at the core of AT.

At some point, they build a Probe Cannon that orbits Giants Deep that needs a huge amount of energy to shoot a probe in a random direction and returns the coordinates (how would they know if the coordinates were actually for the Eye).

Anyway, they figure a supernova would be enough to power the canon (bit overkill if you ask me) which would obviously kill them all so they make statutes to capture memories, start ash twin which would warp everything back 22 minutes so the Nomai would wake up with memories of the experiment and once they find the correct coordinates, stop the ash twin project to stop the loop and avoid.

So next is to generate the supernova. They build a sun station which someway would have kicked this iff but it didn't work. Unable to start a supernova, they turn their attention to the Quantum Moon that they spotted but couldn't land on. After studying Quantum shards, they determine the moon moves to 6 locations, 5 are known planets and they determined the 6th location may be the Eye. They treat the moon as a pilgrimage, land there, built a statue that would travel with the moon in an effort to find the 6th location (wouldn't closing your eyes and opening them move the moon?).

While this is happening, the Interloper comet enters the solar system so the Nomai investigate. They find it filled with lethal Ghost Matter and know it's only a matter of time before it breaks apart killing everyone in the solar system so they decide to abandon the outer Wilds. (Is this what killed them all off? The Interloper is still intact or does the matter spread every time it gets too close to the sun and the ice melts before refreezing on the outskirts again?)

Cut to the start of the game (how long time hads passed before Nomai arrived?). You, launching into space with the Nomai knowledge found by your space agencies previous team, go looking for more info. But first you link with a Nomai statue that stores your memories on ash twin project.

It just so happens that your sun is at the of life and goes supernova while you're exploring. This kicks off the ash twin project, warping everything back 22 minutes and shooting a probe from the canon which can be seen at the start of every loop and also confirms the random direction as you can see it shooting different directions each time. (So how are the coordinates always the same?)

Your memory gets restored and you wake up 22 minutes prior to supernova until you manually stop the ash twin project and find the Eye yourself.

found the warp core, got the co-ordinates, and have found the vessel

The Nomai never met the Hearthians - how did the time loop occur and presumably keep repeating without them being aware of each other? If the probe cannon fires at the start of every loop - how come no one is aware of what it is?

the interloper, merely a fragment of an original comet or mass of ghost matter - I just realized I still didn't finish out inside of the comet

using your probe to just take a photo of the ground -
- i used to fire it at the door of the tower and try and have a bit of the tower in the picture as well to stop that from moving too

tower of quantum puzzles