I am just about to complete a re-edit of a student film I directed (zero budget). Its a comedy similar in style to the comedy 'Spaced'. It features a few shots of the video game Call of Duty.
I assume I may already be on reasonably thin ice using shots of that game but am wondering how much thinner the ice would get if I was to use the Super Mario theme for about 10 seconds over the end credits.
Being zero budget etc, can I get away with this as long as I mention it in the credits? What exactly would I need to say?
Would this exclude me from entering the film into competitions (or has Call of Duty already eliminated me)?