It's difficult to say so I'll categorize them
My favourite RPGmaker horror game is surely Mad Father.
My favourite flash horror game is Ghostscape 2 (but I like Toybox too)
My favourite console horror games are Bioshock and Dead Space

It seems and that's not great because I live near the ocean

These are recurring nightmares and the worth I've ever made (in my opinion). They're probably due to my fear of falling and get drown.

In the first, I'm still child and I go to a little inlet (the only entrance of the inlet is a tunnel). I begin to swim but the tide are rising so my parents decide ...

Hi! I'm Maria
I haven't any favourite horror movie but I have a favourite horror anime, it's Umineko no naku koro ni (and all the When they cry series).
My favourite RPGmaker horror game is Mad Father.