Turnabout USA

While the old adage that 'turnabout is fair play' applies in many situations, Natsume's Turnabout is all about diabolical puzzles where players rotate the entire puzzle while the pieces move within its borders, sliding and rolling into mind-numbing configurations and patterns. The 100 puzzles provided are divided into two groups of 50: Begin Mode and Main Mode. The first 50 puzzles must be solved in order to open up the remaining 50, but the puzzles are numbered in five rows of ten each -- solving seven rounds in a row will open up the next row of ten, thus the puzzles needn't be solved sequentially.