I have tried to enter a number of game jams but I am yet to complete one to my satisfaction. My main problem is scope, because I am mostly a 3d artist and I try to make a fully 3d game each time. I have peen practicing with some simpler 3d styles and hopefully this time around I can make something worthwhile within the time limit.
I use Blender and Maya LT for 3d modelling, Substance Painter and Photoshop for texturing and Unity for the game engine.
Hey and welcome to the community! I'm sure you know this already, but just try to limit the scope as much as possible, and THEN have a session where you cut everything that isn't absolutely essential. Remember, you can always add stuff if you end up with extra time (yeah right!).