My naive assumption would be that your system lacks GL 3.3 hardware drivers, so you could start by trying the Mesa software driver:
- {l Code}: {l Select All Code}
export LIBGL_ALWAYS_SOFTWARE=1
./supertux
As a developer who does a lot of OpenGL stuff, I would really like to know if this solves the problem for you. If not, my only advice is that people have been experiencing similar GL issues with recent releases of SuperTux (another thread
here where where I suggested the same thing, and in which an idiot suggested that it "doesn't seem logical" because other apps would break, incorrectly asserting or implying that every piece of software requests the same GL version), so maybe try an older version of SuperTux if all else fails.
EDIT: It does say that it's taking a stab at GL 2 fallback mode, so perhaps there is an actual bug in an actual piece of software here, not sure.