I like the mechanic of using your previous body to progress, that's neat. Art and pixel art on the level number smiley guy and the mural look great. All the smiles and the puppies on the wall and such really drive home that underlying eerie and sterile feeling of being tested and examined. Plus, those chairs in the window. Solving puzzles felt rewarding and the music was atmospheric. I like this game a lot!
I did get frustrated with the inviso-maze though, it's pretty disorienting. If that was what you were going for though, it worked out. Either way, good job on this game especially in 7 days.