Jscrambler and Js13kGames

July 13th, 2017 | By Jscrambler | 2 min read

Jscrambler and Js13kGames: We will be sponsoring Js13kGames, a JavaScript coding competition for HTML5 Game Developers. The fun part of the compo is the file size limit set to 13 kilobytes. The competition will start at 13:00 CEST, on 13th August and will end at 13:00 CEST, on 13th September 2017. The theme for 2017 will be announced on August 13th.

The Js13kGames is a competition where developers need to build a game and are limited to a maximum game size of 13 kilobytes. This includes all assets like images and sounds.

The challenge in this competition is to make the coolest game in only 13 kilobytes. You have exactly one month to develop your game, and win the cool prizes and the admiration of other game devs and sympathizers!

All the source codes have to be hosted open source on GitHub, so other developers can learn from your coding skills. You will have to provide both the compressed and the uncompressed versions of the game source files.

External libraries are not allowed which means that your game should be able to run offline without the need of loading any external resources. It should also be kept in mind that only pure JavaScript code can be submitted.

There are 3 different categories and they are desktop, mobile, and server. You can submit your game in any of these categories to be part of the competition.


All the participating HTML5 games will be reviewed by experienced people in the HTML5 game industry and JavaScript development.

Among the major renowned personalities are Andrzej Mazur, Jupiter Hadley, Christer Kaitila, Lee Reilly, Tomasz Wesolowski, and of course our CTO Pedro Fortuna, who has been participating as a judge since 2015.

How can I know if I won?

Judges will review and vote for the games after September 13th and the winners will be announced on September 28th.

How can I join?

Follow the details on the Js13kGames website.

And please let us know if you are planning to join! We know there are a lot of HTML5 game developers in our community of users, so don’t be shy, grab this chance to share your love for HTML5 games!

Jscrambler wishes you good luck and loads of fun!


The leader in client-side Web security. With Jscrambler, JavaScript applications become self-defensive and capable of detecting and blocking client-side attacks like Magecart.

View All Articles

Must read next


JS13KGAMES – A JavaScript Coding Competition

Jscrambler will be sponsoring Js13kGames, a JavaScript coding competition for HTML5 Game Developers. The competition will start at 13:00 CEST, 13th August.

August 2, 2016 | By Jscrambler | 2 min read


10 JavaScript Engines To Develop Your Own Mobile And Web Games

JavaScript has already proved its capacity when it comes to developing top-quality games. There are tons of game engine options that can fit your programming skills and needs. Do you know them all?

May 10, 2018 | By Jscrambler | 5 min read

Section Divider

Subscribe to Our Newsletter