Both Newgrounds and Game Jolt let you create a developer account, then upload a zipped HTML5 build (index.html plus assets) through their game submission form. Test the zip locally as a static site first, since both platforms run your build inside an iframe on their domain.
At a glance
| Fact | Value | Source |
|---|---|---|
| Common failure cause on upload | broken relative file paths | itch.io |
On Newgrounds, create an account, go to the game submission page, and upload a zip containing your index.html and all assets with relative paths intact; add a thumbnail and description before publishing. Game Jolt works the same way: sign in, use its game creation/upload flow, zip the HTML5 build, and set the main file so it launches inside their player. Both run your build in an iframe on their domain, so test locally with a simple static server first to catch path or CORS errors before you upload.
What are other places to submit the same build?
- Poki – submit through the Poki developer portal, which also has guidance on web game best practices.
- CrazyGames – upload Unity or HTML5 builds via the CrazyGames developer portal.
- GameDistribution – a distribution hub described at gamedistribution.com.
- itch.io – hosts HTML5 games in an iframe on its own domain; see the itch.io creators FAQ.
- Playgama.com – upload via developer.playgama.com, get tested and published to playgama.com plus partner portals.
Before submitting anywhere, check your build runs from a relative path (no absolute localhost URLs), fits any file-size limit the portal states on its own page, and that save data uses Web Storage correctly since each portal’s iframe origin can affect where local storage is scoped.
Sources
- Playgama for developers
- Poki for developers
- CrazyGames for developers
- GameDistribution
- itch.io creators FAQ
- MDN: Game development
Related questions
Do Newgrounds and game Jolt take a cut of ad revenue?
Both platforms have their own revenue and payout policies stated on their own sites; check the current terms directly on each platform before submitting.
Can I submit the same HTML5 build to multiple portals?
Yes, most portals accept non-exclusive submissions of the same build, but confirm each platform’s own terms since policies vary by site.
Why does my game fail to load after upload?
The most common cause is broken relative paths to assets or scripts; test the zipped build with a local static server before submitting.
Last updated: 24 September 2026