Hatsune Miku: Project DIVA Extend is the third game in the Project DIVA series and the last to be released on the PSP. It acts as an expansion of Hatsune Miku: Project DIVA 2nd , utilizing the exact same gameplay and adding a selection of nine new songs, including modules and music videos to go along with them. The new tracks are part of the game's soundtrack, which includes popular songs from various artists. These songs showcase Hatsune Miku's unique voice and versatility as an virtual singer.
Gameplay in Hatsune Miku: Project DIVA Extend is largely similar to its predecessors, with players taking on the role of a performer who must tap and press buttons in time with music videos to score points. The game features a variety of modes, including a rhythm-based battle system and a scoring mode.
The game's release on July 2, 2009, marked an important milestone for the Project DIVA series and solidified Hatsune Miku's position as a leading virtual singer in Japan.