Frequency for Sony PlayStation 2 (PS2)
Consisting of little more than an octagonal tunnel, Frequency challenges the player to complete various songs by "playing" the correct instrument at the correct time. Each of the tunnel's surfaces represents a particular aspect of the song, such as vocals or drums. As you move through the tunnel, musical notes (represented by small indicators) appear on the left, middle, and right side of each surface. Pressing the corresponding button on the controller will activate these notes. Once you complete an entire section without making a mistake, it begins to play automatically, allowing you to move onto the next surface. The objective of course, is to complete the entire song. However, one caveat is that the songs are broken up into sections, and if you do not complete the song before the end of a particular section, everything you've completed will revert back to its original state, forcing you to start all over again.
A Remix mode allows players more creative freedom, granting the ability to mix and assemble the songs as desired -- the final mix can even be saved for future use. Both of the game modes support up to four players at once. The lineup of over 25 tracks comes from well-known artists, such as BT, Powerman 5000, Orbital, and Crystal Method, some of which can only be unlocked by completing the harder difficulty sections.