I did it! :)
This was my my first Ludum Dare. I did some smaller game jams on itch.io before, but never this one. And since I often failed to submit anything in time in the past due to having too ambitious goals, this time I limited my possibilities by creating my entry with scratch.mit.edu: No 3D, no shaders and limited performance prevented me from even thinking about anything too complex. And it worked! :) Thanks for all the effort which went in the organization of this event. I really liked it so far, and I'm excited to try out some of the other submissions now!