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The Jam runs for 13 days: between April 13th and 26th 2025.
Gamedev.js Jam celebratesWeb games - build an HTML5 game within13 days of the jam on a given theme, it runs between April 13th, 5 PM CET and April 26th, 5 PM CET 2025. Also, there areprizes!
The theme will be announced right at the start. 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 aDiscord server for direct communication!
Check out theprevious editions to get the grasp of what to expect:2020,2021,2022,2023,2024.
This Jam is organized byAndrzej Mazur fromEnclave Games, creator of thejs13kGames competition.
There are optionalChallenges in the Jam - entries submitted to those will be judged separately by the panels of dedicatedexperts, and each offer uniqueprizes for the best games.
You are free to take on any of them, selected few, or even multiple at once.
Challenger:V Systems
Description: Create your original Shader in WebGL and publish it to the V Systems blockchain. Prizes (4 tracks, 4 kinds of prizes for each track) are: $1000 for Top Prize, $750 for Best Visuals, $750 for Best Tech, and $500 for Community Vote. The tracks will be announced on April 13th. Read the blog articleexplaining how it works. Also, check out the dedicated website athackathon.v.systems as well. Have any questions or issues? Support will be provided through V Systems'Telegram andDiscord.
Prize pool:$12 000*
Expert:Xavier Gao
Challenger:GitHub
Description: Provide the source code of your entry onGitHub in a readable form to have a chance of being featured in a dedicated blog post on the GitHub Blog (see2022,2023, and2024 for reference).
Prize pool:to be announced soon
Expert:to be announced soon
Challenger:Phaser Studio
Description: Simply develop your game using any version of thePhaser game framework. You'll find docs, resources and guides onour web site to get started quickly.
Prize pool: $1000 and 10 Vampire Survivors bundles (game and 5 DLCs)
Expert:Richard Davey
Challenger:OP Games
Description: Vibe code a Phaser game, bonus points if it’s noodle-themed!
Judging criteria:40% Fun (simply how much fun our judges have while playing the game),30% Innovation (we’re looking for novel ideas that showcase new game mechanics, we suggest looking at using LLMs as a rich source of inspiration),30% Polish (how polished the sounds and graphics are, and the lack of bugs),+10%Lore integration withPotNoodleDev.
What'sPotNoodleDev exactly? Read thePartnership Pack for details. Before Gamedev.js Jam 2025,PotNoodleDev is joining another vibe coding competition by @levelsio called #Vibejam on Twitter. Get started practicing by joining as well! Bonus Workshop: April 2nd - learn how to vibe code withPotNoodleDev (we can look for other contributors during the workshop like Phaser / Virtuals $GAME framework). Bonus tools: Cosmic Engine Repository - some example vibe coded games, social / web3 tools and templates (released also on April 2nd).
Prize pool:$1 000*
Expert:Paul Gadi
There are three levels of prizes: for all the entries, for given criteria, and forChallenges.
Four different tracks (announced on April 13th) offering four different prizes each:
* The total prize pool is $12 000 to be distributed half in USDT and half in VSYS.
* The total prize pool is $1 000 to be distributed either in USDC or NOODS.
Winners will also be promoted viaour Twitter, on thegamedevjs.com website, and in theGamedev.js Weekly newsletter.
Panel of experts giving feedback to your entries (with their top5 picks each), or judging games from givenChallenges.
Xavier Gao
hackathon.v.systems
Xavier Gao is a front-end developer with expertise in Next.js, Vue.js, React Native, WebGL, and blockchain integrations. Passionate about the intersection of code, design, and interactivity, he is contributing to pushing the boundaries of visual expression. AtV Systems, Xavier focuses on making blockchain tools intuitive and accessible, helping developers—especially those new to Web3—seamlessly explore the space. He plays a key role in launching theV Systems Shader Hackathon in April 2025, aiming to inspire creativity while simplifying blockchain development.
Richard Davey
@photonstorm |photonstorm.com
Creator ofPhaser and founder ofPhaser Studio. If he's not wrangling code, he's working with the studio team to ensure the best possible experience and tools are made for Phaser developers. Was there at the birth of both gaming and the web and has loved the ride ever since.
Paul Gadi
@polats |opgames.org
Paul is CTO ⁄ Co-Founder ofOP Games, focused on helping game developers successfully create decentralized games. He also leads theKERNEL Gaming Guild, a fellowship of the most talented builders in Web 3. He loves exploring the intersection of new technologies with game design, and believes that decentralization and shared virtual economies will revolutionize how we play games.
More experts to be announced soon.
Submit an HTML5 game between April 13th and 26th 2025 through the Itch.io platform. It can be a solo submission, or a team effort. You can even submit more than one entry if you want to. Submitted games should have English as the default language.
Voting will be open to all who submitted a game, and will happen via the Itch.io platform for 13 days right after the submission period ends - between April 26th and May 9th. 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, andAudio. The Overall ranking will be based on the summary of those.
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 createnew 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 theCommunity forums or join ourDiscord server.
Gamedev.js Survey 2024 is over, and theReport was already published! If you participated and submitted your answers - thank you! Feel free to view and use the results of thecurrent state of Web Game Development in 2024 as long as you credit and link to the source.
All participants and judges of the Gamedev.js Jam 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.
Gamedev.js 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. For more details seeBerlin Code of Conduct.