Good. I'm getting the feeling that somebody from a proper game design background worked on this. First start, I was immediately shown a tutorial game, with pop-up tutorial notes. After the tutorial game ended, back to the main menu screen. The main menu is sensible, with 4 big buttons for the main modes (Online, CPU Battle, Daily Challenge, Friend Battle) and smaller buttons for settings, help, achievements etc. The English is understandable, the UI/UX is professional, the game is Reversi.