I started playing a few times and I didn't see any option to save the game (not in the settings menu, not when my character was going to bed like in stardew valley) and I almost quitted. I'm glad I didn't. Now I know the game autosaves at the end of every day. Maybe you could add an option to save the progress? (or maybe there is a way and I didn't find it).
Also I was walking around (it was raining, about 2am) to the east of some chapel or something and I pressed m to check the map and my game froze. I don't know if it was the game or my computer.
P.D. Spanish is my native language so sorry if I wrote something wrong or if I'm not very clear.