Hey! I've uploaded the post-jam update version. I didn't find what the problem was (I was unable to reproduce it) with the warning message window, but I did rewrite that code to a hopefully more stable version. I've also changed the way attack markers are cleared, and in case that isn't enough I made sure they're all removed when the aliens' turn is done. There's also a Windows desktop build now, though if you use it, I recommend sticking to the default 800x600 resolution.