On my end I re-tried to play ns2_linux32 with my R9 390X two days ago running
Linux 4.9 (amdgpu), Mesa 17~git and LLVM 4~svn and I was able to play a
complete alien tutorial without crashes and the rendering looked OK to me. By
the way I haven't seen the game running on another platform so I can miss
something, but everything looked acceptable, I don't know if it's the expected
rendering, but it's a nice, acceptable and honest rendering. I've never played
too much this game to be able to hit the 32bit memory limit.