Yes, it's that "youtuber movie".
There's a moon of blood, and a convict is welded into a submarine and dunked in order to investigate what's going on down there. He has a thoroughly unpleasant time, with strange creatures, and the blood proving more of a problem than water.
This is largely a one set movie, with the iron sub being it, with a few other sets for brief times. Which means we are relying a lot on the main actors performance... and Markiplier is fine! Should he be Markiplier, or Mark Fischbach? Well, the opening credits has the former, so that's what's presented, although the end credits are his full name.
But at two hours... damn, this is long. There are very long takes of Simon (the convict) just staring at horror at various things, or waiting for things to happen or... just not doing very much. He reacts well, but time crawls during these segments.
There is also a feeling of there is lore we are expected to know. Yes, this is based on the game, and I've seen some Let's Plays, and in general you get the idea of "something bad happened and now this is one way people are surviving", but... there are lots of elements and names and items that feel like we are supposed to know more about what is going on, which I wasn't getting. I'm sure there are also nods to the game in the form of easter eggs... but again I wasn't getting them either.
This feels more like a personal passion project than a general movie. It's done well, as Markiplier is very popular, but I can't say this works in and of itself.
