The game overall is brilliant, just as I would've expected. The graphics of each character are perfectly similar to the nendoroids, and it's just simply breathtaking to have them being animated in 3D for the game. The song list contained many songs I am familiar with and some that I haven't heard of, which in the end I also fell in love with. With each new song I unlocked, my excitement grew when I discovered what it was. I was even more excited when it was a familiar song; I was curious to see how the animations and the video would be similar or different to the original videos online that many people like me are familiar with. I am extremely satisfied that they implemented the option to choose our partner. I decided to spend a month with each of the available partner choices instead of sticking with Miku or Rin the whole time. You are able to develop friendships with them, and that is one of my favorite things about this game. I love all of the vocaloids that were provided, they were the ones many fans like me are familiar with. Although, I am slightly disappointed that these people weren't able to add GUMI Megpoid (another famous Vocaloid) due to her being created by CRYPTON. I didn't think it was fair to let GUMI be able to appear in the songs and videos and as a side character to give us news and items. I would've been happy to have her as a character you can unlock after developing friendships with all the other characters, but I was disappointed that you weren't able to obtain her. One of my reasons for my excitement of this game was to be able to partner with her. (She is my favorite Vocaloid after all). I'm happy with being able to see her from time to time if it's all I can get. You are also able to feed your partner and play a familiar virtual game from the past (dubbed MikuVersi in this game). In addition, you can even dress them up! (I had WAY too much fun with that feature.) For my game play experience, it was fairly easy for me to keep up with the songs due to me being familiar with the rhythm, beat, and flow of the songs. It wasn't hard for me to beat Easy and Normal mode; Hard mode isn't a joke when it's hard. In my opinion, EXPERT VOCALOID FANS would have it easier to be able to play this game due to all the familiar, popular, and easy beat songs (as well as Project Diva being on the PSP, PS VITA, and other handheld consoles that the Project Diva series due to beING made by the same company). Similar rhythm gamers such as Osu! players would be able to have an easier time playing this game due to their experience with the beats and rhythms. To the average newbies at rhythm games, I wouldn't say they won't be able to play the game as easily as the experts, but that they should listen to the songs and play them on Easy mode before getting to the harder stuff. Listening and getting familiar to the songs should provide a small advantage because it allows you to get used to the beat, flow, and rhythm. I had fun with hitting the buttons because it felt as if I was actually jamming along to the songs due to the sounds the buttons made. The buttons that you have to hit on screen in accordance to the keypad is ALWAYS following the beat whether it be on beat or off beat. There are times where you have to use both buttons and the keypad because some aren't able to hit the single button quick enough, but that is usually only found in (rarely) Normal mode and very common in Hard mode. I find that to be the hardest for newbie players than the experts who are familiar with the songs because us experts are able to understand what and when to hit due to our knowledge of the song. This game does need practice to get things right (such as full combos, high scores, and perfects). You need to get used to hitting the buttons accordingly because you need to keep your eyes on the top screen and not on the keypad. This is fairly easy on Easy and Normal mode due to the game limiting which buttons are to be hit for each level of difficulty (on default, Easy mode uses the A and B buttons. Normal mode uses A, B, and Y buttons. Hard mode uses all buttons [A, B, Y, X]). Hand-Eye coordination is key. This is also difficult if one finds playing with the buttons and keypad is easier, though you would also have to keep your mind sharp to which button/key hits which. I found myself finding difficulty using two keypads due to my mind focusing on one pad rather than the other, but people vary. The keypad acts just the same as the button pad if not altered. It is recommended to use both pads if you can't hit the buttons/keypad as fast. The game also features a keyboard and 'Make your own tune' option, which allows you to make your partner sing! It also offers different options such as an 8-Bit sound keyboard and Synth. I found this most pleasing since I decide that I and many others would enjoy arranging songs for our little companions to sing. There is hardly any faults or struggles I have found in the game due to the expectations being exceeded above and beyond. (The only struggle is trying to get those DANG FULL COMBOS! D:< ) I'd recommend it to any Otaku, Vocaloid Fan, or rhythm gamers. I enjoy this game very much! (A little note when I was playing the game though, one of the songs is seemingly difficult on Easy mode. coughGakotsuGakudantoRiriacoughcough- ))