Hatsune Miku
One of the Vocaloid compilations, "Exit Tunes Presents Vocalogenesis feat. Hatsune Miku", debuted at number-one on the Japanese weekly Oricon album charts dated May 31, 2010, becoming the first Vocaloid album ever to top the charts. Another album, "Supercell", by the group Supercell also features a number of songs using Vocaloids. Other albums, such as 19's Sound Factory's "First Sound Story" and Livetune's" Re:package", and "Re:Mikus" also feature Miku's voice. Other uses of Miku include the albums by Absorb and by OSTER-project. She had sung the original Nyan Cat called "Nyanyanyanyan!" by daniwell-P. Kagamine Len and Rin's songs were covered by Asami Shimoda in the album "Prism" credited to "Kagamine Rin/Len feat. Asami Shimoda". Another song original sung by Miku, "Color", was covered by Maria, and featured as the opening theme of the 2011 anime series "Freezing".
Hatsune Miku: Project DIVA
As the game is a rhythm game, players are allowed to choose from a wide variety of Vocaloid songs, original songs sung by Vocaloids, including songs sung by Hatsune Miku, Kagamine Rin and Len. Players also can choose which character they wish to play in the game. Known as modules, these modules can be completely different characters or simply different costumes for the same characters. These modules, though not directly controlled by the player, will be the ones appearing in the music videos throughout the game including their specific costumes. For example, if the player chooses Kagamine Rin for their first character and Hatsune Miku for their second character, during solo songs only Kagamine Rin appears in the video but for duets both Hatsune Miku and Kagamine Rin will appear in the video. Each of the songs have their own difficulties which are Easy, Normal, Hard and Extreme. Initially both the Easy and Normal difficulties of a song are unlocked, upon clearing the Normal difficulty, the Hard difficulty will be unlocked and so forth. Players progress through the game by completing songs and unlocking more new songs until they eventually unlock all songs.
The game's gameplay is similar to that of other rhythm games in which players must press a series of buttons according to the sequence on the screen. The game primarily makes use of the 4 main symbols, X, circle, square and triangle, which are the face buttons for the PlayStation Portable. Various floating gray buttons of those symbols will appear on the screen, and the colored version of those symbols will begin to float in from the various sides of the screen. The player is required to press the face button once the colored symbol lands on its grayed version and based on the player's timing their accuracy is rated. Accuracy is described with a word displayed in the bottom right corner of the screen, ranging from "Cool" to "Miss". The game is scored on accuracy and the player is awarded with a rank ranging from "Perfect" to "Dropout" (denoted by "DropXOut"). It also includes a chance mode whereby the combo system compounds points earned, for example one perfect note gives the player 100 points, if they have a combo of 34 notes, the 34th note alone gives them an additional 3400 points.