First time in Ludum :)
Well, this should be fun. I have never actually finished a game, nor have I ever attempted to make one in such a short time so this will be fun!
The tools will depend on what direction I will go in depending on the theme.
2D:
C++, SDL, Photoshop.
3D:
Unity3D, Blender, Photoshop
See ya when the time comes.