At the same time, it’s pretty easy to dismiss this idea of using old video game sound chips to cover well-known tunes as just some kind of novelty gimmick.
Ticket giveaways are a powerful way to get people out to your show. You can hand out physical tickets near the venue or contact local radio stations, podcasts, blogs, local stores, etc. to see if they’d be into giving away tickets to your event, for example, as part of a contest. If nothing else, you’ll create buzz around the event.