well
Chapter 1 is grassy with an underlying theme of plants (the boss takes place on top of the Greenhouse Tower)
Chapter 2 is traditional Japanese themed, with pagodas and cherry blossom trees
Chapter 3 is undecided as of now so idk
Chapter 4 is a Vegas-styled city with gambling and shady things
Chapter 5 is a tropical island with a curse that has brought paranormal happenings to the once-relaxing beaches and forest
Chapter 6 is a castle in a sky region known as the Aether
Chapter 7 is the Puppets Factory, which... is pretty self-explanatory
and Chapter 8 is the Palace of Puppets, a black and white castle belonging to the Puppeteer (the main antagonist)