Reversi and Othello are technically different games, but usually, most games called “Reversi“ are Othello just trying to avoid trademark infringement. (Othello is trademarked.) However, this game is a willy-nilly mix of the two. It starts like Othello, with the specific pattern in the middle, but the game ends when a player can’t make a move and the opponent can, which is a feature of Reversi. I would review higher if these were options. Also, the hard level isn’t challenging at all.