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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!


Very fun, and challenging

It took me a while to get the hang of it, and the boss pissed me off until I realized that as long as I was quick to respond, it was an easy win.

I unlocked everything.

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It's not my style of game... I normally like games where at my skill level i can pass the 3rd level! I'm so bad at this game it's horrible

little swords?

I definitely would die if I had to use a mouse. All in favor of the keyboard. That said, it's hard. That said, if it wasn't it'd be lame.
Options are little things that basically act as . . . swords? They add to the area of the "body" that can kill things.

People find this review helpful!


An Awsome game, which the flash stick improved 100 times. I hope moer and more games use flashstick as a standard


just a question what do options do

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Credits & Info

4.29 / 5.00

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