What is js13kGames?
Read GitHub's tips and tricks article, check the Resources for tools,
read the Blog, and subscribe to the Newsletter - good luck and have fun!
Hi, I'm Andrzej
I'm running this competition on my own
in my free time. I usually acquire prizes worth more than 20.000 USD and send special js13kGames t-shirts to the participants for free. With gadgets and stickers, every single year, with free shipping.
To help me keep it all going you can send a few bucks via the PayPal button below, thank you!
Share the love for HTML5 games and support the js13kGames competition!
See the Contact section for more details on how to get in touch.
Graphic Designer, mom and wife. Open source and mobile games enthusiast. Making game designs for Enclave Games, t-shirt designs for js13kGames, writing inspirational posts on Tutsy, and making cool things for children at MAMAdesigner. Love taking photos, drawing icons and spending time with her family.
For over 20 years Josh Marinacci has worked as developer advocate, UX designer, researcher, engineer, and Twitch streamer. He has worked at such storied companies as Palm, HP, Nokia, Sun, and Mozilla. He is currently the Senior Developer Advocate for Mixed Reality at Mozilla. Josh believes in the power of technology thoughtfully applied, and the need for better human computer interfaces.
Mike is an AI researcher, game developer and science writer. He's the creator of the game-designing AI ANGELINA (who also entered a game jam once), the founder and co-organiser the Procedural Generation Jam, and the developer of games like Rogue Process (which started life in a game jam!).
Christof Wegmann is founder and CTO of Exit Games and develops the realtime, multiplayer, cross-platform product "Photon". Photon is used by more than 300,000 game developers - including companies like Square Enix, Ubisoft, Disney, Warner Bro, SEGA, Miniclip, Codemasters, Glu, Rilisoft or World Golf Tour. The high performance Photon Server and Photon Cloud allow cross-platform gaming between Mobile, PC, Console, Web, VR/AR and other popular devices.
Maciej Szpyra, Michał Nykiel, Paweł Skierczyński and Victor Debone. Developers during the day, gamers during the night. At Spartez, our personal passion for games was big enough that we needed to bring more team members to the jury, and we are ready to play all the games coming from 2018 developers 🕹🕹🕹 with some expectations from multiplayer games.
Youtuber ⁄ Graphic Designer who shares & reviews a variety of different games - everything from Indie Gems to AAA titles. A veteran of numerous game jams, he's featured & given feedback on entries in everything from the 7DFPS Jam to Ludum Dare 29.
Community Awards winners
Voted among the developers themselves.
- 1. UNDERRUN by Phoboslab - 71 points
- 2. The Chroma Incident by Ryan Malm - 55 points
- 3. Bellwoods by Matt DesLauriers - 45 points
- 4. Everyone's Sky by Rémi Vansteelandt - 44 points
- 5. ONOFF by Bran Dunino - 41 points
- 6. JS13K Battlegrounds by Cody Ebberson - 40 points
- 7. Re-Wire by Jan Mankopf - 39 points
- 8. Envisionator by Donitz - 36 points
- 9. Exo by Jack Oatley & ai Doge - 32 points
- 10. Hans Fixes the Internet by Madmarcel - 31 points
- 11. Hold On by Andrew James Adams - 26 points
- 12. Systems Offline by David Stark - 24 points
- 13. Konnekt by Monsterkodi - 23 points
- 14. [Hoverla] by Viktor Uhryn - 20 points
- 14. 1024 Moves by GregPeck - 20 points
- 16. Geoquiz 2 by Xem & Nghia - 19 points
- 17. Quest of Tod by SamirH - 18 points
- 17. Wander by Razh - 18 points
- 17. Bulletcraft by Kakus - 18 points
- 20. Go OFFLINE by Bartaz - 17 points
- 20. SPACECRAFT by Csaba Csecskedi - 17 points
- 22. Off The Line by Bryan Perfetto - 16 points
- 22. Robo Galactic Shooter by Ashish Bardhan - 16 points
- 22. Gib by Attila Horváth - 16 points
- 22. Offline Paradise by Sirxemic - 16 points
- 26. Castle Escape by Stuart Lee - 15 points
- 26. Planetfall by Cheng Chiao - 15 points
- 26. The Matr13k by Agar3s - 15 points
- 29. __OFF_THE_LINE__ by Jesús Olmos - 14 points
- 29. Stay Off The Red Line by James - 14 points
- 31-34. Emoji Swap, Enmeshed, Interplanetary Postal Service, They Follow - 13
- 35-36. Raven, Zurbo - 11
- 37. Keep-Alive - 10
- 38-45. Anti_Virus, Cat Out!, Planet Figadore has gone OFFLINE, Planet-X, Ranger Down,
Submersible Warship 2063, You Are Offline, You have to get off line - 9
- 46-47. All Systems Offline, Connection Defender - 8
- 48-58. ISP, Man on Wire, Offline Dinosaur Game, Sum It Up, Earth that was, Pronto, Convo IRL,
Envelope, Gunturion (Shoot the purple buildings), Key Battle, Line of Fire - 7
- 59-66. I Must Call My Grandmother, Twisty Polyhedra, Robot Coder, Storm Of The Chaos Bane, Service Provider,
Audio Dash, Offweb, Enjoy The Sunshine (Get Offline!) - 6
- 67-81. Call Center Mess, Dinoffline, DISCONN3!CTED, Keep them OFF the LINE, Richy the squeaker boy,
Silent network, SpaceDucts!, This game has a random title, When my vpn goes (...), You were disconnected,
Faraday Cage Rampage, ICE-X, Sushi Kitchen, Captain Katamov, LOGOUT - 5
10 × PlayCanvas account
Ten 6-month PlayCanvas Personal accounts offering a cloud-hosted, collaborative platform for building games.
30 × GitHub account
Thirty paid GitHub plans - personal accounts with unlimited private repositories for twelve months.
1 × Proto.io account
One Proto.io account with Startup plan for 12 months.
3 × CodePen Pro account
Three CodePen Pro Starter accounts with lots of cool features for 12 months.
5 × NodeBB hosting
Five Hamlet hosting plans for 12 months each from the NodeBB team.
10 × HTML5 Cross Platform Game Development Using Phaser 3 ebook
Ten copies of HTML5 Cross Platform Game Development Using Phaser 3 ebook by Emanuele Feronato.
3 × Jscrambler license
Three Jscrambler Professional licenses for three months each.
There are four different categories, you can submit your game to any of them - it's up to you.
There's a special page for everything about the new WebXR category if you want to know more.
Full power of the hardware.
Handheld touch devices.
We will also have the famous Community Awards voted among all the participants.
Desktop category (overall)
Top 100 games
- 1st place: Proto.io, CodePen Pro, Kendo UI, Making Money with HTML5, Phaser Editor, js13k t-shirt + CD
- 2nd-3rd places: CodePen Pro, Kendo UI, Making Money with HTML5, Phaser Editor, js13k t-shirt + CD
- 4th-5th places: Kendo UI, Making Money with HTML5, Phaser Editor, js13k t-shirt + CD
- 6th-13th places: Phaser Editor, js13k t-shirt + CD
- 14th-100th places: js13k t-shirt + CD
Top 10 games
- 1st-3rd places: Construct 3, WebStorm, Gamedev Mini-Degree, Gamedev Using Phaser 3, Pyxel Edit
- 4th place: WebStorm, Gamedev Mini-Degree, Gamedev Using Phaser 3, Pyxel Edit
- 5th place: Gamedev Mini-Degree, Gamedev Using Phaser 3, Pyxel Edit
- 6th-10th places: Gamedev Using Phaser 3, Pyxel Edit
Top 5 games
- 1st-3rd places: Jscrambler, Fullstack Webdev Mini-Degree, NodeBB, AppDrag Cloud Backend ⁄ CMS Pro
- 4th-5th places: Fullstack Webdev Mini-Degree, NodeBB, AppDrag Cloud Backend ⁄ CMS Pro
Top 15 games
- 1st-3rd places: Oculus Go, WebStorm, PlayCanvas, cardboard, js13k t-shirt + CD
- 4th-5th places: WebStorm, PlayCanvas, cardboard, js13k t-shirt + CD
- 6th-10th places: PlayCanvas, cardboard, js13k t-shirt + CD
- 11th-15th places: cardboard, js13k t-shirt + CD
Top 30 games (voted among developers themselves)
- 1st-5th places: HTML5 Games: Novice to Ninja, CryPixels, Evil Glitch, Glitchbuster, GitHub
- 6th-10th places: Evil Glitch, Glitchbuster, GitHub
- 11th-30th places: GitHub
Package size below 13 kB
Two sources - readable and compressed
The competition is focusing on the package size, but learning from others is also very important. Please provide two sources of your game - first one should be minified and zipped to fit in the 13 kB limit (sent via the form) and the second one should be in a readable form with descriptive variable names and comments (hosted on GitHub).
No external libraries or services
You can't use any libraries, images or data files hosted on server or services that provide any type of data - for example Google Fonts are not permitted (although you are allowed to ask users to live-load a web font to support some characters or emoji on devices that can't display them properly, but you have to make sure your game will work without them). Your game should work offline (Desktop and Mobile categories) and all the game assets should fit in the package size limit (not counting WebXR's A-Frame and Babylon.js frameworks). If you manage to shrink your favorite library below 13 kilobytes including the code itself, then you can use whatever you want, just remember about the 13 kB limit.
Main theme for the competition is "offline". It's highly advised to follow it in your game, because the judges will pay attention to that, but you can freely interpret the theme and implement it however you feel would be the best.
Deadline - 13th September 2018
The competition starts at 13:00 CEST, 13th August 2018 and ends at 13:00 CEST, 13th September 2018. No submissions will be accepted after the end of the competition.
You have to have the rights for every asset used in your game. Remember that the submitted games will be published and made available for everybody to see.
New content only
Do not submit any old games or demos - you have a whole month to work on something new and fresh, this should be more than enough. Also, submitting Breakout or Flappy Bird clones taken out of a tutorial make no sense at all - try creating something at least a little bit more original.
Errors and browser support
Your game must work and be playable in at least two browsers: latest Firefox and Chrome, but the more supported browsers, the better. There should be no errors - you can lose some points if your game is showing any errors in the console. If we cannot play your game, it won't be accepted.
It doesn't matter if you're working alone or with your friends, just remember that the number of prizes is fixed, so you'll have to share your trophies with your teammates.
There's a special form to submit your game. Please remember that you have to provide two sources (see the Rule #2 for details) - a link to a public repository on Github and a zipped package. Participants are allowed to submit more than one game in the competition, though sending the same game as independent submissions targeting different platforms (for example separate builds for desktop and mobile) is forbidden.
Submissions will be checked manually and published after positive verification. This may take up to a couple of days, so be patient if your game is not yet online. I claim the right to reject any submission without giving a reason, although I hope I don't have to. I also have the right to update the rules of the competition at any time.
Time frames for voting, judging and announcing winners
The Community Awards voting among the participants will last for a week between September 13th and 20th, winners will be announced on September 21st. Judges will vote for the games during the two week period after the submission time ends: from September 13th till 27th, winners will be announced on September 28th.
Server category specific rules
All the Server category rules, the sandbox server and the demo code can be found at github.com/js13kGames/js13kserver.
Code of conduct
All participants and judges at js13kGames are required to agree with the following code of conduct. Organizers will enforce this code throughout the online event. We are expecting cooperation from all participants to help ensuring a safe environment for everybody.
Js13kGames is dedicated to providing a harassment-free competition experience for everyone, regardless of gender, sexual orientation, disability, physical appearance, body size, race, or religion. We do not tolerate harassment of competition participants in any form. Competition participants violating these rules may be sanctioned or expelled from the competition at the discretion of the competition organizers. TL;DR: Be excellent to each other.
Frequently Asked Questions
- Why exactly 13 kB?
- Well... why not? :)
- What's in it for you? Are you getting paid?
- Nope, it's just my own idea and it's made for pure fun. I'd love to get a sponsorship though as I spent my own private money on the first edition to cover making t-shirts, shipping of the prizes worldwide, etc.
- What does the "zipped" term exactly mean?
- Sent package should be zipped with your usual system archiver, the only allowed extension is .zip. Let's keep it simple - it's a competition for coders and this should be your main focus, the code itself. Thanks to the zipped archive you will easily send your game and we will easily check the file size.
- Can I use Flash?
- Can I use WebGL?
- Yes, though it might be hard to fit it into 13 kilobytes if you plan on doing an FPS game.
- Can I use CoffeeScript or TypeScript?
- Can I use WebAssembly and ⁄ or Rust?
- Can I use compression through the self-extracting PNGs?
- You can use it, but remember that the zip is as good, or even better in terms of compression than PNGs, so there's no point in doing so.
- Do I have to register somewhere?
- No, you just need to submit your game through a form when it's ready.
- How many games can I submit?
- As many as you want, there are no limitations.
- More questions?
- Send them in via email or social media or post them in the dedicated topic at the HTML5GameDevs forums.
If You have any questions or propositions please feel free to contact us via e-mail: email@example.com.
The other options include visiting our profiles on Twitter or Facebook,
or joining our Slack channel and sending us the private message.