EDCE uses Unity as the engine. Manjaro may be an issue, as the most success with Unity on linux appears to be Ubuntu.
That being said, this thread
Seems to have a problem extremely similar to yours, so I suspect you video is failing to initialize. Though there is some VMWare in that thread, you should tried those solutions, including the -"-force-opengl" command line argument or turning off graphics hardware acceleration.
Do you run any other Unity-based games?