Ludum Dare 32 — April 17th-20th, 2015 — Theme: An Unconventional Weapon

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Null Chroma

by Chris Delta - Compo Entry

In Null Chroma, you use color as a weapon.

When an enemy is hit with a projectile, the color of that projectile is subtractively mixed with its color. In order to kill an enemy, null its color to black.

The goal is to null any enemies to prevent them from reaching your orb (the flashy white thing) until time runs out. If more than 10 enemies reach your orb, you restart the level. The orb's health is indicated by its color, white is good, black is almost gone.

There's a friendly little ring around both your orb and the enemy spawns indicating how much time is left in a level. Keep in mind that the timer counts down to when enemies stop spawning, they still all have to be nulled for the level to be won.

Controls are explained in game, the only thing you need to know is that the original requires a middle mouse click to fire green, whereas the version marked "I have a cruddy mouse" will fire green if left and right click are both held down. I think this edit falls under the porting exception, but I don't want to push that.

Lastly, those three circles at the bottom of the screen show the RGB value of whatever your cursor is pointed at.

Have fun! And if you enjoy this game check out my gamedev blog: , I make lots like it!

Downloads and Links




MattV says ...
Apr 20, 2015 @ 5:22am

Best part was painting up the level! Cool game!

Valon says ...
Apr 20, 2015 @ 5:22am

Cool concept. Sometimes tho I didn't know if I lost or if the game crashed (it happened very early).

But it is a very nice use of the theme!

gene-z says ...
Apr 21, 2015 @ 12:37am

Very cool game ... keep working on this

SilentNight says ...
Apr 21, 2015 @ 2:55am

This game is really cute with a neat weapon/use of theme. I like the game a ton.

DaGamesta says ...
Apr 21, 2015 @ 2:58am

Interesting concept and a well made engine. Cool through and through, I'd like to see more. :D

jprogman says ...
Apr 21, 2015 @ 3:08am

Love the concept! But the middle mouse button to shoot green paint doesn't work for me and I have a middle wheel button.

gatinmnsok says ...
Apr 21, 2015 @ 11:27am

Great game, cool mechanic and graphics.
Controls are a bit difficult though.

ElectroYak says ...
Apr 21, 2015 @ 8:44pm

the graphics are great. I really liked the small levels

Dixbit says ...
Apr 21, 2015 @ 8:51pm

Original gameplay mechanics, but hard to use. Nice graphics.

Ryusui says ...
Apr 21, 2015 @ 8:52pm

Surprisingly intense for such a simple-looking game. I love the concept of using color subtraction to defeat your foes.

Might should consider gamepad support in the future. Left stick = move, right stick = aim, B, A, and X = R, G, B?

Chris Delta says ...
Apr 21, 2015 @ 8:58pm

Ryusui, I was thinking exactly the same thing! If I feel like doing any improvements to this that'll probably be one of the first!

Ash K says ...
Apr 21, 2015 @ 10:21pm

Great idea, this was a really cool take on the theme! I also enjoyed mixing pretty rainbows on the walls.

rmc says ...
Apr 22, 2015 @ 6:33pm

Good graphics and very cool gameplay.
The controls need a bit of work, especially to avoid the use of middle mouse button.

Drauthius says ...
Apr 22, 2015 @ 6:51pm

I like the art and the concept, but not really getting the game play.

Ossi says ...
Apr 22, 2015 @ 7:40pm

This is really great! Amazing use of the theme, the graphics were really nice and I find the color nulling mechanic to be pretty unique. Overall pretty darn good!

Toccio says ...
Apr 23, 2015 @ 10:17pm

Really nice idea for the theme!

TheMeorch says ...
Apr 23, 2015 @ 10:20pm

Terrific art style and great use of the theme. The camera zooming when you move was cool but a little jarring, but the platforming controls are quite good. Nice work!

FireCamp says ...
Apr 25, 2015 @ 11:46am

Overall very nice little game !
Loved the fun and idea. It's a bit too easy, managed to finish 3 levels very easily. I love the dynamic created by the gameplay, but you can basically just spam both buttons and kill enemies easily. The colors blending all over the levels is looking very nice.

Like it ! good job.

PS: would be great to have some audio!

volkoivan says ...
Apr 26, 2015 @ 6:19pm

Woah, this is a cool idea!
Liked how the indicators shows you the percentage of colour on your place :)
No audio is sad, but anyway, 5/5

sorlok says ...
Apr 27, 2015 @ 12:24am

Very nice idea with colors! Very creative! Would have liked to see maybe some puzzle solving? But painting enemies was also fun.

Apr 27, 2015 @ 6:11pm

Good idea overall. Would have liked to have some audio or it be a little more clear when you were about to die, but fun little game.

stevenlr says ...
Apr 27, 2015 @ 6:15pm

Really nice interpretation of the theme. The game is smooth and really fun to play. Great job!

LeftRight92 says ...
Apr 27, 2015 @ 6:15pm

Little confusing at first so maybe could use a little more in-game explanation, felt like I needed a little more to keep me engaged while still on the learning curve.
Very clever concept and graphically very pretty, well done.

Noah Ratcliff says ...
May 6, 2015 @ 8:53pm

Solid game, great mechanic. I really like the small touches you put on the paint effect in the world. However, the game would have benefited from either a faster pace, or some more audio to keep it engaging.

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