For me it was a great experience!
I totally agree that roguelikes are the perfect genre to develop your own games in. Having a game with ASCII-graphics is absolutely accepted by the awesome community and the procedural content helps a lot to make a game enjoyable by the developer himself.
It was my first game jam and even the first time I created my own game. I used this week to learn new techniques such as JavaScript, rot.js and GitHub, so it was a very intense week for me. But for now I have enough of coding and also enough of my own game which I tested a lot during the week.
What really thrilled me was the first comment I got for my game. It is such a good feeling if someone else says that he enjoyed your game.
So I decided to give this good feeling to others too. During the last days I played a lot of the other entries and commented things I liked about these games. I learned that most of them are really fun if you just give them a try!