Giving a presentation on Ruby at my school, the day before Halloween. We're watching public domain horror movies afterward, like Night of the Living Dead, so the lecture is called Night of the Living Ruby.
I figured we needed a video game to go along with it, so I picked up a little library called Shoes (shoesrb.com) and played around with it for a day or so, and wound up with this.
It was a lot of fun, big thanks to the guys on the IRC channel who helped me out.
Code is at github.com/JoshCheek/PresentationFiles/tree/master/NightOfTheLivingRuby!/game/