I want to make game for Playstation Portable but can you do it using Gdevelop? I found some game engines that allow you to do it but they are too hard to learn
There is no official support for PSP, no.
The only supported platforms are Windows, Linux, MacOS, and HTML5 browsers.
en realidad si que puedes, convirtiéndolo en HTML o HTM puedes portarlo a la psp