Very innovative gameplay idea, it was fun going around trying to find the differences in the environment.
I wish there was a bit more of a sense of direction. When I began playing, I didn't know what to do or how to interact with anything, so I went around clicking things and losing lives until I would restart without knowing what was going on. It wasn't until I read some of the comments/reviews that I figured out what I was supposed to do.
Nevertheless, very interesting idea, would love to see more updates on this! Good job!