-- Next Fest demo -- The game interracts with the system, including displaying graphics on your desktop, adding files on your system, and opening default Windows applications. This functionality does not work correctly with Proton. When the game tries to go back to the desktop and show graphics over it, the game appears to crash and/or freeze. The game almost certainly would need to be updated to deal with this, and the developer has stated that this won't happen at least for the initial release.