If you don't get this game within 10 minutes, you need serious help, my friend.
The game itself has a soothing background of China, and when you start playing, you'll notice a volcano as part of this picture. It's not distracting, but who'd wanna play an awesome game while staring into an endless void of white. The music's nice too, and you have a variation of calming Asian pieces that take effect on the gameplay and cause deep concentration. You know how when you listen to classical music, you start to think more than when you listen to today's music? That same effect applies here.
You can switch from pencil mode to writing down the possible numbers before you decide which one will ultimately stay inscribed to your grid. You can decide if the game will tell you if you made a mistake or not *very useful*, or you can go pro and decide by yourself. The gameplay is HIGHLY addicting, and you'll find yourself hanging onto that PSP until you're done with the puzzle. Collecting points isn't hard, because you get points after each grid you complete. But it's not that easy either, because for each mistake you make, each time you ask for an answer from the game by pressing triangle, or press square to view every single possible numbers for all cells, you lose points, so you won't get as much. A certain amount is needed to unlock Very Hard and Intense modes, and I just can't wait to get my hands on those and satisfy my mind even more with this captivating game.