Hatsune Miku
Since the success of her Vocaloid 2 package led to an expansion of marketing possibilities, most of the mass marketing has come after her initial release as a response to her popularity and has been on going since 2008. Even with the addition of other Character Vocals, Miku's name continues to be used as the primary source of marketing for Crypton Future Media, to the point where most products for their Vocaloid related products will usually only feature Hatsune Miku's name. In March 2012, the Nomura Research Institute estimated that the sales of all Hatsune Miku brand goods added up into the region of since her release in 2007. Her name is easily the most recognizable of all Vocaloids.
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.