Creepypasta Puzzle Giveaway! (Read everything again, big changes here)

Nothing better than Halloween.

Damn, some strange dudes must aggre with me e.e'.

SOOOOOOOOOOOOOOOOOOOOOOOOO...I was thinking, why not do a giveaway to celebrate my favorite holiday? And it's theme?
Creepypastas. I love then and hope you guys love them too.
I tried to attempt to do this before, but my english sucked, hard. And i still think it sucks. But with the tips and with a little acknowledgment about Creepypasta, you guys can do it.

So good luck and be as scary as possible! Happy Halloween! You have 4 days, clock is ticking. And don't be shy, you can ask questions here.

At the end of the giveaway i will post the correct answers!

NOTES ABOUT THE PUZZLE (IMPORTANT INFORMATIONS!!!!):

PS: Question 13, i actually misspelled, it's "Sonic R" and not "Sonic CD". Aaand as i don't know how to post images and only links, i probably gave out the answer of the last question. FML. At least it's not BAD for the first puzzle.

PSS: Read the description of the puzzle guys.

PSSS: Question 4: The word that cames before the object should be "A", but i misspelled and put "An". Sorry ^^

PS4 (See what i did here?): The Question 18 is the only one that doesn't end with a period. Sorry for that.

Hopefully last one: Question 15 - Mostly people don't consider "Death" an proper category, so you should go to the second highest. UPDATE: It isn't OC and the correct answer is an sub-category.

IT IS OVER! THANKS FOR ALL THAT PARTICIPATED, THE CORRECT ANSWERS BELOW:

1. Go To Sleep.
2. Tulpa.
3. Suicide Mouse.
4. An Mirror. <--- This question had an error as quoted on OP.
5. Slenderman.
6. Ben Drowned.
7. Cupcakes.
8. Herobrine.
9. Pokemon Lost Silver.
10. Lavender Town.
11. Dead Bart.
12. Luna Game.
13. Tails Doll. <--- This question had an error as quoted on OP.
14. Candle Cove.
15. Beings. <--- This question had an error as quoted on OP.
16. 666.
17. Trollpasta.
18. Then Who Was Phone? <--- This question had an error as quoted on OP.
19. Dog.jpg.
20. Zalgo.