Top definition is a large forum featuring hack & bots for many games such as WonderKing, MapleStory, Combat Arms, Gunz, WoW, Cross Fire, Runescape and more.
GameKiller - Bringing The Pain To Each And Every Game
by GKS3NSA September 23, 2009
Get the merch
Get the GameKiller neck gaiter and mug.
Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
Get the merch
Get the Smooth Brain neck gaiter and mug.
A man who interferes with another man's attempt to woo a woman by making him look bad, or simply less desirable by comparison.
WOMAN: I love this club
MAN: Yea, this song's really good
GAMEKILLER: Please, this song sucks, you obviously have no taste. I'm a musician.
by Reverend Bijhan Al-Attack March 04, 2006
Get the merch
Get the gamekiller neck gaiter and mug.
Be it male or be it female, game killer
means someone who tries to keep
*YOU* from gettin' any.

Mother hen is a prime example of one of
many cockblockers and ballbusters.
So is the drama queen, man candy, and
the one upper. And those definitions don't
just apply to the site

...It is for REAL.
I was trying to score a date with a girl,
but my cousin acted like a one upper, and
stole my girl. The Game killer mother-fucker did
not get any, though... he found out the hard way
the girl was a drama queen! Ha!! Serves his
lazy ass right!!!
by CDSmith1967 April 10, 2006
Get the mug
Get a game killer mug for your coworker JosΓ©.
A friend who is demonstrating very poor game but is killing all potential opportunities for others. Behaviors include constant interrupting, long-winded lectures, obnoxious behavior, and instigating the girl to talk about her ex.
Man, I went out with Jim the other night and he spent the entire evening sympathizing with some girl about her breakup. He kept lecturing her about what a good man should be and why she's too good and beautiful for her ex. What a game killer.
by rice racer October 18, 2011
Get the mug
Get a game killer mug for your fish Julia.
A game killer can be any of the following Douche bags. (not all of the game killers, there are many more but they cant keep us down. We must keep on playin the game)

The rich guy

The Gym Guy

The Im smarter than you will ever be guy

The "I've done that and twice as good" guy

The "Friend who unintentionally screws things up for you but you have to humor him anyways because he is your homie and he doesnt know any better" guy
Get the mug
Get a game killer mug for your dad GΓΌnter.
any man originally from the cespool also known as New York City who makes $95 million dollar real estate deals by day and refuses to put moves on any women by night. The Game Killer has been known to end dates with an in-depth discussion of economics and politics followed by an awkward silence.
The Game Killer drove all the way to Chicago to meet a girl that wanted to ride him but instead he was content to just give her a ride back to the suburbs in his car.
by Cooati December 03, 2006
Get the merch
Get the Game Killer neck gaiter and mug.