This game is pretty common in forums. SO, I thought i'd bring it here too.
The game is pretty simple.
U give three clues to who a charachter or object is from the books and other people have to guess it. Then somebody else makes a clue.
Here is mine:
1) bookworm ( not literally)
2) girl
3) was called a mudblood by Draco Malfoy in the 2nd book

Man that one is easy. It's Hermione.
HEre is mine.
1)monster of the Chamber of Secrets
2)killed a girl
3) kills people by using it's eyes

Easy. That's a Basilisk.
Here is one of mine again.
1) half giant
2) lives in a hut
3) expelled from Hogwarts

that's Hagrid

ok here mine
used to be work for voldemort
hogwarts teacher
the subject he teaches after being scrambled TPIOONS

I believe that would be Professor Snape. (Snivelleus)
Here is mine, and it may be a tad bit harder:
1. A ghost.
2. Died in a fire.
3. Is very dull and boring.
If no one gets it in 3 guesses, I will post new clues. Good luck!

is it The Bloody Baron.(just a guess)

Umm, is it Professor Binns?

my turn;
1) his dad is a death eater
2) he is a friend of malfoy
3) Ron used the polyjuice poition to turn into him

thats easy crab,
heres mine: the most wanted man besides voldomorte
in hiding
padfoot

I'm thinking Harry's Godfather (sorry forgot his name)
1]used to play quidditch as a seeker
2]had sex with the women that gave birth to Harry
3]killed by voldemort