I'm in for a bit!
This will be my 15th LD in a row. This one will be tough since I'll be at a robotics competitions, but I'll probably just end up making a one hour game.
Language and Library: Java with Lib-GDX
Graphics: Paint.NET, Piskel, Inkscape
Music: Probably nothing
SFX: Might use SFXR if I have time or just Audacity.
Good luck everyone!