To be honest, I don't like "game engines". I think they're a waste of time. If you invest your time learning an actual programming language you got a real skill AND you can make games just as quickly as anybody else.
Also, I see a lot of people asking for a tutorial. I donno, I think that's a bit too much to ask for in a 48 hour game jam. And more importantly, I did this for fun, so I want to spend my time programming gameplay, designing maps, you know, the fun stuff. And I find that most people who come to play gamejam games are pretty tolerant of stuff like this.
Thanks for the feedback, I'll check your game out!