The ones I’ve gotten (although it’s been a long, long time since I’ve had the episodes) were sometime benign (like roommate hosting guests and having a party in my room while I’m asleep) but sometimes absolutely terrifying. The terrifying type usually involved somebody breaking into my apartment and about to kill me with a knife or otherwise injure me, and I can’t do anything about it, as I’m completely paralyzed. Not a fun time.
The story needs a reference to an anal probe to be believable.
I had a few episodes of sleep paralysis in the early 90’s. The word malevolent is right on the money for how I felt about the thing in the room with me. One time it was a vampire who was trying to bite my neck as I pushed it away and we seemed frozen in our push and pull. Another time the evil force was more mysterious and dark. It had a generally human like form and was about to kill me. I somehow had a screwdriver that I tried to stab it with but it’s mind froze my arm in place.
Waking up from these my heart was always beating fast and the dreams seemed extremely real except for they didn’t fit in with reality. The fear took sometime to calm before I could return to sleep.
I didn’t know what they were until about a year after the first when I read something about how so of the people thinking they’d had alien abductions might of had this problem. With how real and frightening these were I could see that if someone was of the right bent they would call these alien abductions or demon attacks.
Wow, I now realize I experience this phenomena every once awhile. My most lucid recollection happened while I spent a weekend at friends uncle lake house. I took the basement bedroom, as it was cooler down there. But as you can imagine, the basement was underground and NO WINDOWS and when the lights went out, it was PITCH DARK. I ‘woke’ up in terror, dreaming that I was trapped in a dungeon.
That incident triggered a latent fear of complete darkness, and now I must have some light in the room before I can go to sleep.
I wonder if it was the same guy who trashed my dorm room 
But, the truth is that you’re not getting nearly 5% out of what you could out of the game without some kind of guide. There are MILLIONS of people out there trying to play this game and they all THINK they know what they’re doing.
So, are we talking an RPG or a shooting game?
I used to get these all the time. Usually it was an evil demon girl with long black hair and a white nightgown glaring at me from the corner, biding her time before gliding over to the bed and ripping my throat out with her teeth. She never actually got to the gliding and ripping parts, but the biding thing scared the hell out of me.
Sometimes I’d imagine I’d gone through my whole day, had conversations with people, had family drop by, the works. Then I’d wake up and not be sure if it was real or not and have to ask my husband, “Um, did Mom come by today?”
After a while, after I found out what they were, I started trying to control them. Like, I’d wake up in terror because an axe murderer was on his way down the stairs into my bedroom to kill me, and then I’d realize there were no stairs in my bedroom, so I’d tell myself firmly, “Okay, so it’s not an axe murderer, it’s Casanova and he’s bringing wine and chocolate!” This worked amazingly well. 
I eventually figured out I only get them if I fall asleep on my back, so I make sure to always sleep on my side now. Casanova is lots of fun, but the evil demon girl is freaking creepy, and it was always a coin toss which one would show up.
Um…
What in blue hell are you talking about?
I’ve never experienced this.
I wonder if I did I’d be aware of it, or would I be taken in by the apparent mysticism as it’s happening to me, much as I believe dreams are real while I am having them.