Despite the fact that all of these themes (more or less) suck – I’m in.
Not sure about tools that I’m going to be using. I think the best choice is to use HTML5 because web-based games are comfortable for the player – no need in downloading nor installing anything. On the other hand I just finished a game for some other contest with Java and I felt that I love Java more 
The game I made is terrable btw. Check out how frustrating it is:
Anyways. It’s going to be fun! Looking forward for it.
Haha I love that your theme taste is completely opposite to mine. Hope the final theme will be something that suits us both.
Sometimes it’s even more amusing when the theme is not what you expected (or wanted) to be