JS1k: The JavaScript code golfing competition

2016 - Let's get eleMental!

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Together the hand picked jury will pick the top 10. They are a mix of JavaScripters and demo sceners.

Jan Krutisch

Jan, aka halfbyte is a freelance web developer with roots in the demo scene and probably best known for his web audio work. His status has lately been updated to "greybeard".

@halfbyte jan.krutisch.de

Joshua Koo

Software engineering in Zopim / Zendesk by day, random coding at night. Organizer of Singapore Creative Coding Meetups. Loves JS, wacky ideas and adventure.

@blurspline joshuakoo.com

Brian Leroux

A web hacker best known for his work on Adobe PhoneGap and later Apache Cordova. These days he's exploring the emergent bot space which are really just freaky web services. (The freaky part is that we can build web services with javascript and we no longer need servers.) He loves JS, despite giving him so many reasons to feel otherwise, and with a few friends collects those special edges in a little blog called wtfjs. You can find him around the usual developer-y places

@brianleroux brian.io


A competition has to have prizes. Below you see an overview of the prizes and who offered them.

1024 EUR

MediaMonks — Best of luck to all JS1k contestants! Pssst, we’re hiring like it's 1999. Come present your lovely demo in person and land an even better job for real.


3x 1024 PLN

Surfly — An advanced co-browsing solution. We’re looking for a frontend dev, want to to join us on our adventure? (3x 230 EUR)


128 EUR

Infi — We build custom software for ambitious, high-growth companies that want to have a worldwide impact. We strive to be a place where developers love to work and play. Interested? We are always on the lookout for talented devs!


80 EUR

Peter van der Zee — Besides spending hours on end maintaining this website, he's also a JavaScript freelancer. Get in touch at c80.nl!


50 USD

Andrzej Mazur — HTML5 game developer from Enclave Games who organizes js13kGames compo and sends the Gamedev.js Weekly newsletter.



Below are the final top10 demos for this compo. Check the overview page to see them all!

#1: Romanesco 2.0

By Lara & HellMood
( @literallylara )

Move your mouse to change the shape and listen to mystical sounds.

#2: Voxeling

By Raimon Ràfols
( @rrafols, website )

Very very simple voxel engine :)

#3: Firewatch

By Rebecca
( @veubeke, website )

Controls: arrows and space. Someone’s setting off fireworks in the forest. What happens next will…

#4: Art in '92

By Siorki
( @Siorki )

She started dancing almost a quarter century ago ! Tribute to a demo that redefined the Amiga scene back then.

#5: CRT TV

By Krisztian Toth
( @krisszhu, website )

Upload an image and watch it on an old CRT TV!

#6: Gliese 581 c

By Philippe Deschaseaux
( @ehouais, website )

Ground level flyby of an inhospitable planet (arrows to turn left/right)

#7: hypnotoad1k

By Gabor Bata
( website )

Elementary mental experience based on an episode of the 31st century's most popular TV series: Everybody Loves Hypnotoad.

#8: 3 Card Klondike

By Eugene Lapin

Most popular solitaire card game

#9: Marmmodore-1K

By Felipe Alfonso
( @bitnenfer )

Marmmodore-1K or Marmmodore-1000 is a


By Mathieu 'p01' Henri
( @p01, website )

And the beat goes on in the LORENZ SINGULARITY!