upload new textures to packaged project - possible?

Development Rendering
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1

Hi all,

The client wants virtual gallery with the possibility to upload new textures himself, and replace the old ones time to time. Is it ever possible to do inside packaged project?

2

Is this for a single or multiplayer game?

I don’t if it is possible with, maybe it is with C++ coding or by editing the source code.

3

Should be single. So it can’t be done?