Rock Worm's Custom Story(s) ideas/questions

[The Rock Worm]

After some consideration, I've decided to create this thread where I can put any idea I have for a custom story; or you all discuss any of my custom stories you've played (once I release some). Life is a bit busy now so The Dark Depths is on pause for a few days, but will get back to it soon.

This thread will also serve if I have a question concerning my current story project. Below is my current question for the upcoming story The Dark Depths.

Question 1: How do I have my own "Loading Screen" image with text on it (like in FG's Amnesia)? I know it can be done, but not sure how.

Now eventually, not in this story, I'd like to have giant sea monsters chasing you while you're in a mini-sub (size of the monsters 40' to 60'). How hard would it be to have a monster chase you in a mini-sub? For that matter, how hard would it be to have a mini-sub 'fly' in the 'ocean'?

Lastly, as you know, I'm trying to make stories that 'feel' real. Translated I'm working on stories who's scenarios realistically could be possible. Some aspects might be inventions from a brilliant scientist, so these would represent 'possible' technology. After re-playing Penumbra: Overture I liked how real it felt. I hope to capture that same style feeling in my stories, so when discussing/answering my questions please take this into account.