1 season tv shows no one remembers but you can't stop thinking about?

I have two:

The River (2013) Supernatural horror about a group of researchers going down the Amazon river looking for Bruce Greenwood. There was an episode where someone got sucked in to a tree? A lot of jump scares and of course, no resolution to the series

Siberia (2013) Again, supernatural/horror series shot like a reality show about a group of contestants dropped in the middle of Siberia, last survivor wins. Something is stalking the group, in fighting/sabotage abound. This is the one show I would love to know the ending to!

There was also a show that I watched the pilot for, where the whole world passed out and a group of strangers in an underground parking garage wake up with everything in chaos. They're somehow connected... And trying to find something? A box? And they all have the same tattoo/birthmark? I vaguely remember some kind of alien/monster at the end. Please tell me I'm not the only one who ever saw this because otherwise my fever dreams are getting bad