Fun - Definitely fun! Really great puzzles that were quick to solve, but still took a second to think about. The brevity of each level kept the pace high and made me want to keep going!
Theme - Each level was pretty small, so I suppose that fits the theme?
Aesthetics - Nothing too special, but its simplicity is what made it really fun. I wasn't distracted by anything crazy and that helped me focus on the puzzles.
Music - Very nice, set the tone well.
Sound - I didn't notice any sounds in the game, really. All I heard was the music.
Mechanics - Simple controls, but wonderfully thought out and executed puzzle mechanics! Every level was an absolute delight - especially when you hit those AHA! moments. (Mine was the one with 3 switches, but only 1 ghost)
Story - Honestly, I kinda forgot there was a story. I was so wrapped up in the puzzles.
Overall - An amazing puzzle game that I honestly could have easily spent the rest of the night playing. Each level was so perfectly bite sized that it was dangerously easy to say "Just one more." Incredible work - well done!