Once per year there is the Output.DD which is hosted by the Faculty for Computer Science of our university.
It was originally coined as a possibility for students to present their works of the last year to the public. With the years it became a bustling afternoon where one can not only see some student projects but also meet local companies and get connected. For the exhibitors it's the perfect occasion to present themself and their work.
We had one stand with two game stations where everybody could play our game for free. All visitors were excited and stayed above-average long.