I could see a a lot of effort was put in this one! Good job! I lke how you could spin the watch so you could travel through time. That's a nice spin to the theme.
First, for the visuals, I think a nice contrast between the foreground and background would make it visually more appealing. Unfortunately, there's no audio. Then, in terms of the gameplay, same with the previous comment, I'm not sure of the controls as a tutorial would be good addition. I don't know what to do in the game, so it would really be helpful.
Nice game, and congratulations!