Deep & exciting puzzle game with 6 reversible numbers ! Thrilling ups and downs of sum point by kaleidoscopic six numbers on the board will surely fascinate you ! If you like abstract board games or number puzzles, such as Reversi, Igo or Sudoku, you will be pleased with this new type puzzle game. You will get the highest score if you make the total number in 4*4 center box bigger as much as possible up to 66 at the final 21st turn with full bonus points. Please try and enjoy Number Reversi with mental arithmetic, strategy and concentration. If you complete this puzzle, please challenge ROKURIGO, upper version of this puzzle, which is also available free at android market.