Love the idea! Each of the four arcade games feels genuinely playable, which means a lot to me.
The tutorial worked well for me. I understood what I was supposed to do before getting into the main levels. One thing that felt a little strange, though, was being able to accidentally zoom in/out or move around while reading the manual, especially since it breaks the pixel-perfect presentation. I think it would be really neat if all the text and images of one game could fit into just two pages.
The music works well overall, though the walking sound effect didn't feel quite as convincing to me.
Overall, it's a charming game with a really solid implementation of its core idea.