You guys work fast, I didn't expect the Linux version so soon. That said, I have some issues with it using the fullscreen mode; I can't do anything in the main menu, none of the items even highlight on mouseover and clicking doesn't do anything. Another issue is that picking lower screen resolutions just makes the menu smaller and anchored in the lower left corner. Windowed mode works as expected so this is mostly a minor inconvenience though.
Also, I ran into this funny bug, when I removed the parent nodes of my spikes the spikes themselves didn't get removed since they were apparently also connected to my head despite not even touching it.