This jam is now over. It ran from 2023-04-13 15:00:00 to 2023-04-26 15:00:00. View results

Gamedev.js Jam celebrates Web games - build an HTML5 game within 13 days of the jam on a given theme, it runs between April 13th and 26th. Also, there are prizes!


Theme for this year's jam is TIME. Remember that your entry will be judged based on how well you implement the theme, but you can interpret it however you like.


Join us no matter your skill level - this game jam is a perfect opportunity to create your very first game, or build a prototype for your next commercial hit. Almost two weeks of development time should be more than enough!

You can use #gamedevjs hashtag on Twitter to share your progress, ask for feedback, see what others are building and hopefully help them out if they need it. There's also a Discord server for direct communication!


Submit an HTML5 game between April 13th and 26th 2023. It can be a solo submission, or a team effort (no hard limit on the team size). You can even submit more than one entry if you want to.


Voting will be open to all who submitted a game, and will happen for 13 days right after the submission period ends - between April 26th and May 9th. Overall winners will be announced on May 10th, and challenges on May 11th.

Games will be voted on based on a given criteria: Innovation, Theme, Gameplay, Graphics, and Audio. The Overall ranking will be based on the summary of those.



There are optional Challenges in the Jam - entries submitted to those will be judged separately by the panels of dedicated experts, and each offer unique prizes for the best games.

You are free to take on any of them, or all at once.


There are two levels of prizes: for all the entries, and for given Challenges.

Overall prizes

Those prizes will be given to the best entries of the overall ranking:

Open Source Challenge prizes

  • 1st-10th places: $50 GitHub shop voucher

Flash Revival Challenge prizes

  • 1st place: publishing deal and 2000 EUR
  • 2nd place: 500 EUR
  • 3rd place: 250 EUR

Web3 Challenge prizes

  • 1st place: 2000 USDC
  • 2nd place: 1000 USDC
  • 3rd place: 750 USDC
  • 4th place: 500 USDC
  • 5th place: 250 USDC
  • 6th-10th places: 100 USDC

Arcadians Challenge prizes

  • 1st place: 1000 USDC + 1 Arcadian NFT
  • 2nd place: 300 USDC + 1 Arcadian NFT
  • 3rd place: 100 USDC + 1 Arcadian NFT
  • 4th place: 50 USDC
  • 5th place: 50 USDC

Overlord's Arena Challenge prizes

  • 1st place: 1 genesis Creepz NFT (~$2500)

Interoperability Challenge prizes

  • 1st place: 250 USDC + 1 Arcadian NFT
  • 2nd place: 100 USDC + 1 Arcadian NFT
  • 3rd place: 50 USDC + 1 Arcadian NFT
  • 4th place: 50 USDC
  • 5th place: 50 USDC

Winners will also be promoted via our Twitter, on the website, and in the Gamedev.js Weekly newsletter.


Panel of experts giving feedback to your entries (with their top5 picks each), or judging games from given Challenges. Those are: Michelle Mannering, Ewa Mazur, Ania Kubów, Raf Mertens, Rafael Morgan, Leon Do, Brett Cleary, Daniel Keller, Tim Sulmone, Paul Gadi, Taufik Sani, Allan Patel, Joe Carnell, and Dominic Smith.


You are free to use any game engine or library as long as the build/export is playable in the browser. We recommend using Phaser, Defold, or GDevelop, you might also consider Cocos or 8XR, if you'd like to aim for multiplayer you can check Colyseus or, and if you need an extra challenge, you can try the js13kGames-specific size-constraint ones like Kontra, Goodluck, or LittleJS.


The short version is: anything that can run on the Web in a browser without extra plugins is considered a valid jam entry. It's highly advised you create new content for the jam - submitting your old demos or already finished projects makes no sense.

If you have any questions or concerns please ask at the Community forums or join our Discord server.