plays on a single dance pad), Couple (two players play with a unified stepchart spread over two separate dance pads), and Double (one player plays on two dance pads, stepcharts are different compared to Single), the last of which requires a step code to be entered. After selecting a play style, players will be prompted to select a game mode out of three: Easy, Normal, and Hard. Normal and Hard are the main bulk of the game and offer different set of songs. Easy, which has the same song selection as Normal, limits players to one stage but enables them to play to the end of the song even if the dance meter is completely depleted. After choosing a mode, players will be taken to the song selection, which takes the form of a jukebox-like menu of CDs that represent the available songs. On this screen, various step codes can be entered on the dance stage to adjust the game. Single Play offers two different difficulty levels per song. These levels, known as "Basic" and "Another", may be set while selecting play style or by entering step codes during the song selection. Each difficulty is rated on a scale of 1 to 7, each labeled with a name: Simple (1), Average (2), Novice (3), Expert (4), Professional (5), Genuine (6), and Hero (7). Another step code enables the "Mirror" option, which rotates each arrows to their opposite directions. Players may play anywhere from one to five songs, depending on how many the arcade operator sets the machine to play each game. Players start with 6 song options and cannot choose the same song twice within the same credit. If they manage to fill the dance meter to maximum in Final Stage while playing Basic difficulty in Single Play, players will be granted access to Extra Stage, where they may choose another song set to Another difficulty. A new song will also be added, which varies depending on whether players selected Normal or Hard modes. During gameplay, 3D dancing characters appear in the background of each song. Different characters can be selected at the main title screen by standing on either the left or right arrow panels while pressing the select button. Internet Ranking Version An update, titled "Internet Ranking Version" and popularly known as "DDR 1.5", was released on November 18, 1998 and is by far the most common version