We do have a way to increase the limit on request, but we strongly recommend either figuring out how to combine your resources, or offering your game as downloadable only. Browser based games are like websites, have the same performance characteristics when being loaded. A website with a lot of files can be a slow and poor user experience, so we have a default cap of 500 files to encourage people to consider going with a downloadable game instead at that point. If you have a strong reason to have more than that then you can send us a message via support to get the limit increased. Thanks
Viewing post in HTML5 files limit raise
Hi,
Thanks for the reply. I Sent a message to support 11/13/2018.
This gave me something think about though. Maybe from now on I will present a limited version on your website and make the full game downloadable with all the files. But for now I'd like to still use itch.io for full game, at least for the moment until I release next Big updates.