Oh no. I'll need to look into that when I'm at my linux machine tomorrow. :( Could it be permissions in the directory its running in? It does need to write a file to that dir when switching games...
If you're talking about save.tscn it was created, no problem. The game loads, I press the arrow keys 3 times (bleep, bleep, poooowh) when START shows up and nothing happens then segfault. Must be an internal game engine issue.