https://bugs.winehq.org/show_bug.cgi?id=39014
--- Comment #15 from jc onte onte_jc@yahoo.com --- (In reply to Stefan Dösinger from comment #14)
O2Jam contains a few suspicious files: libwine.dll, opengl32.dll, wined3d.dll. Interestingly it does not contain a ddraw.dll, and I have no idea what it's doing with a replacement opengl32.dll.
you can delete that one, i did put that opengl32 just to fix the process staying even though you close the game