There is no single universal build size limit across web game portals. Most set practical constraints instead: Portals typically review load time, first-interaction speed, and general performance rather than enforcing a single universal megabyte cap. Compress assets and test load time before submitting.
At a glance
| Fact | Value | Source |
|---|---|---|
| portals judge load speed, not just size | performance-based review | itch.io |
Most portals don’t publish one fixed megabyte number for build size. Portals like itch.io host web games, but each platform maintains its own specific guidelines. Platforms such as Poki, CrazyGames and GameDistribution publish or distribute web games under their own guidelines. Playgama.com is another such destination: upload through the Developer Console at developer.playgama.com, get test feedback within 24 hours, and the game is published on playgama.com and distributed to partner portals.
Practical steps before submitting anywhere:
- Compress textures and audio, and enable engine-level compression (Unity WebGL and Godot web exports both support build compression settings).
- Split large asset bundles and stream non-critical assets after first interaction instead of blocking the initial load.
- Test actual load time on a throttled connection, not just file size in your build folder – portals care more about time-to-play.
- Check each portal’s own developer documentation before submission, since requirements can differ and change.
Sources
- itch.io creators FAQ
- Poki for developers
- CrazyGames for developers
- GameDistribution
- Playgama for developers
- Unity manual: Web
- Godot docs: exporting for the Web
Related questions
Does a smaller build guarantee acceptance on a portal?
No. Portals generally weigh load time and playability, not raw file size alone, so a small build that loads slowly can still be rejected.
Which engine settings reduce web build size?
Unity WebGL and Godot web exports both offer compression options at build time; combining that with compressed textures and audio has the biggest impact.
Last updated: 24 September 2026