MK1: Sub,s Ice and Scorps spear are good because it,s dizzy the enemy, but if you count the projectile only i would say Raiden,s lightning because you can counter every Air Attack with the long beam.

MK2: Well its hard to say here, the fastes shot is Reptiles Acid split, the most damaging Kitana,s the most spammfull Millena,s and Shang,s.
The best varation of shots have of course Liu Kang with his 3 different shot high,s.
The worst shot has Baraka i think.
Sub and Scorp like in MK1.
If I must choose I probably would take Kitana,s because of damage and juggle possibility.

MK3/U: I like in someway Kabals Ball, it has a good hitrange, can be fast shot again and does medium damage.

My favorites are:
-Liu Kang's Fireballs (unpredictable)

-Cyrax's Net (catches opponent even in mid-air)

-Rain's Orb Thing (allows you to move your opponent for a short time)

My favorites would include Kabal's projectile and Kitana's projectile in MKT, because they are great midair weapons. Kitana's has the great damage and a big hit box, but has the reload time. Kabal's is fast and a good size. They are both pretty deadly.

I'm thinking you mean the best projectile in the entire MK games right?

Well, IMO it would have to be Noobs. That thing was crazy, and alot of people say its unfair. Not only did the ball prevent you from attacking, but you also couldnt block. Granted, the balls effect doesnt go off so quickly, meaning Noob could have time to atleast pull off 3 massive combos. Not only was that projectile cheap, but its probably the most bad ass one ever.

I really like Reptile's Fast Forceball in UMK3.

Raiden's Reverse Lightning Throw in MKT is also pretty creative.

They both can be used in really vicious combos

It would have to be those that were more unpredictable than the standard projectiles.

Liu Kang's fireballs were great because there were 3 different heights they could be used at.

Johnny Cages high & low fireball attack were also unpredictable.

Scorpion's Spear
Sub-Zero's Freeze

I would have to say Rain's control ball or Noob Saboit disabler.

MK1:

Johnny Cage: The green long flame was done nicely, I liked the way it came out.

Shang Tsung: The Skulls were awesome.

Rayden: (I loved the way the colors changed you)

Scorpion and Sub-Zero: I loved those back then. Boring now.


MK2:

KITANA!!!!!!! The fans are amazing!!!! I love them.

Mileena: The sais kicked ass.


Mk3:

SONYA!: I LOVED the way they did the rings! The awesome effects when they crushed.

MKDA:

Sonya: THE KISS!!!!!! I loved it! It was amazing!

Li Mei: Her star thing was cool.

-----to lazy to think, i will write later.

Frost4584 Wrote: I would have to say Rain's control ball or Noob Saboit disabler.

I would definitely agree with you there Frost4584. Especially for beginers just learning the game like my brother, and sister. They'd always pick one of these two. I could still beat them, but they were excellent projectiles. Completely different from any MK before.