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Grey matter is an anti shooter, or a shooter without bullets.
Essentially your the bullet.

Run into the exposed brains of incoming attackers to destroy them.
Killing 3 of the same type of enemy will cause a "Trinity attack" killing everything inside it.

Avoid enemy dangers (flashing bullets, tails, teeth and lazers)

Download the stand alone version here
http://www.newgrounds.com /downloads/flash/greymatt er.zip
(it runs faster)

-You can upgrade at any time in game by pressing P or Esc to pause the game.
-Shields are most important and should be purchased first.
-Holding shift will not only slow you down for better control, but it will also extend, and speed up your options that spin around you.
-Trinity Attacks will increase your chain multiplier which gives you more points for upgrades

All the rest of the info is in game

-Edmund & Tommy


Grey Matter can be played with the Xbox 360 controller using FlashJoystick.
To install FlashJoystick visit
http://flashjoystick.pill owfortgames.com/
To install mapping for this game you'll need this file.
greymatter/greymatter.fst ick
once FlashJoystick is installed, if you just hit open instead of save for the .fstick file, it'll auto load into FlashJoystick and you'll be able to play.

Special thanks to Tommy for FlashJoystick!


good but easy

the overall game was pretty good i have to say pretty easy with the keyboard i dont know with the xbox because i dont have 1 but if i could give u a few idea i think u should add more upgrade and it gonna be way more awesum

People find this review helpful!

That was really sweet.

Ok, I never read the instructions, so when i got into the game, I was like how the hell do i shoot? I figured the rest out, but no shoot button for me. I was like "Oh great, this game is going to suck, already there's a glitch" but no. After one of the first mobs ran into me, it exploded and I was like wtf? This is now one of my fave games. It was really great, 10\10 5\5

That was really funny :-) good work

it made me laugh, and well not alot of work does make me laugh ;-) either my humor sucks in general or this is just real good stuf :-)

I loved the leave britney alone stuff on the wall lol!

So fun.

I wasn't feeling to happy when I first played it but now I'm smiling.
It sure was fun.
well done for making such an original and classic game.

People find this review helpful!

It was amazing

At first it seemed like it was too hard...
I lost once on normal, beat it, beat boss mode on my first try, and then beat expert on my first try... Endless was ok, but it got boring after a little while..
All around, it was a great game...

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Credits & Info

4.29 / 5.00

Oct 30, 2008
1:39 PM EDT
Action - Shooter - Multidirectional