Milicent’s Knowledge

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

Milicent’s Knowledge is a game that summons an entity from the 7th century that will answer your questions or bestow knowledge. Milicent was known for predicting the future and answering about past events. That is until she was branded a witch and burned at the stake. Therefore, you must never ask her any questions about fire or burning. The ritual was found on Reddit Three Kings by User KaiThePokemonMaster.

~You will need~

• A sink with a mirror above it. Bathroom mirrors work best. 
• A small container. A yogurt cup will do.
• A needle. Be sure to sterilize it beforehand. 
• A bowl. 
• A protection item. OP does not specify what qualifies as a protection item, but I believe a religious symbol or an amulet would suffice. 
• A band-aid

~Preparation~

• Fill your bowl with hot water, allowing it to fog up the entire mirror. 
• In the small container take cold water. 
• Keep it nearby with the needle and your protection item. 

The Stranger Ritual

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

The Stranger Ritual is cast as a killing curse by summoning an entity known as the Stranger, using a doorway as a portal. Nothing is known of the Stranger, anyone who has seen it has gone blind or insane. It was found on the Creepypasta Wikia and I believe the User Sylar1610 to be the author.

~You will need~

• A room with a solid wooden door. It should not have any peepholes. It should have a locking system. 
• A photo. It cannot be an image of a family member. It must be recent and clicked by you. You should know this person’s name. 
• A black and a white candle. 
• A lighter.
• A piece of chalk.
• A gift. It must be an impersonal item, recently bought. The OP recommends candy. 

The Nesting Doll Game (Matryoshka Game)

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

The Nesting Doll Game is a fortune telling ritual, penned on Reddit NoSleep by User kukla-ne-plach. The game involves using Matryoshka dolls to grant wishes or receive good fortune. I’ve added some tidbits sourced from the OP's comments to complete the instructions.

According to OP's story, this game was narrated at summer camp by a group of senior boys. In Russian it is called, "Udachnaya Matryoshka," meaning "Lucky Nesting Doll."

~You will need~

• A set of Matryoshka dolls. The OP recommends having a few sets on hand. They must be antique or the ones passed down as an heirloom. New ones are not as effective. 
• A room with a large mirror. It should contain one door and no windows.
• A few boxes of candles. The more, the better. 
• A lighter.
• A wastebasket
• Paper and pencil.
• A container of salt.
• A lucky charm or religious symbol tied by a thread. 
• A friend for assistance. 

Queen of Fallen Blood

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

Queen of Fallen Blood ritual involves summoning an entity through a mirror to answer your questions.  The OP titled it ”How to actually contact Bloody Mary” so it is simply another version of the Bloody Mary ritual. The original post was deleted but I found one on Sixpencee and Games You Should Not Play

~You will need~

• A large dark towel
• A thick red dye [there are instructions on how to prepare this.]
• A crowbar /a hammer
• A minimum of 3 light sources [These can be as varied as you like, torches, matches, lighter, candles etc]
• A friend for assistance

The Shuffle Game

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

The Shuffle Game is a ritual that involves communicating with spirits through a music-playing device.

It seems to be a relatively safe game, considering that it does not involve any blood or offering. Yet precautions are necessary because after all, you do not know what kind of spirits will converse with you.

The OP recommends casting a salt circle to ensure safety.

The Candles Game

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

The Candles Game is a ritual to summon mysterious entities. The original poster of this game did not say exactly what this ritual could conjure since the result is supposed to differ from person-person.

This game is extremely long so my advice would be to catch on your sleep to be alert during the play. 

Dragon's Luck

DISCLAIMER: I do not recommend messing with the paranormal. I only post these games for entertainment and because we all love a good scare.

There is a belief that a dragon’s power heals illnesses and bestows good luck.

However, one should never use it for personal benefit. Should it be so, the dragon’s fury unleashes a dreadful fate upon the power seeker.

This ritual involves invoking ‘dragon's luck’ to remedy an illness.

Though I warn you, do not attempt this ritual except as a last resort.