Use file plugin inside to insert games

I would like to have a form where a user could have the possibility to add games.
I wounder if it's possible to use the file plugin "inside" other plugin to allow the user to upload games after filling the form.
I already have the form ready but I don't know how to add functionality "upload game" in the end of the form to allow the user to upload the game and be available for the other users play.

It's possible to do that with elgg?
Thank you

Beginning Developers

Beginning Developers

This space is for newcomers, who wish to build a new plugin or to customize an existing one to their liking