I also encountered the bug with the person have 3 cards then I swap my black with them and they say they have 4 red cards so, i kill em and they are still innocent.
Maybe i didnt understand and objective correctly but based on the other stuff such as animations.
the game style is really good and main concept is also great.
I would add something like a ticking clock or rain in background to just make it a lil more immersive but other than that.
the game looks really nice.
good work :)