Hi there! I'm sorry you faced such an issue. I just downloaded the demo and it works on my end. Is there any chance that you installed Roadwarden, or its demo, in the past, maybe even on Steam? It's possible that the game has merged its new files with some more ancient relics and that it formed a hybrid between two versions. If so, cleansing all the folders related to the game, especially the save folder, should be able to fix the issue.