A player is allowed to create a room or join a room. The 'DJ' (the player who creates the room) is given power to choose songs and settings for the room. The DJ also has the power to kick people out of the room and close the dance floor off however; this cannot be permanent. The song's BPM (beats per minute) usually will determine the song's difficulty and speed(with certain exceptions e.g. beat up mode).
The basic game is played by pressing the arrows displayed on the screen (with the exception of red Chance arrows, which the player must do the opposite of) and pressing spacebar or the control key on every 4th beat of the song. The more accurately the spacebar or control key is pressed, the higher the score, "PERFECT" being the best, "GREAT" and "COOL" still counted as good enough, "BAD" you will get very little score, and for "MISS" as the worst one, no score. If you get a "MISS" you will not get the chance to play for the next move. The player currently with the most points during the game will have their character in front and the most visible part of the stage.
A special move during most gameplay modes is the "Finish Move", can be said the hardest move. If a person does not miss the move before it, they have the option to do the "Finish Move". Finish moves issue a lot of points and can often be the key to success.
When a player does 2 or more PERFECTs consecutively, he will get bonus points for doing so. These PERFECT combos (or "Perfect chains") enable players to interfere with the opposition. A blue circle indicates that you made a PERFECT in your move, and acts as a shield. When a player performs a PERFECT X1 (or perfect X2 in some cases) they will make either the player ahead or behind them receive a yellow circle. While under the yellow circle, points will not be given if that person does not achieve a PERFECT (in a finish move it reduces a percentage rather than the whole move). In addition, players can increase their points by playing 'chance'. This can be activated by pressing the delete key or the . key on the number pad whereby red keys appear and players have to press in the opposite direction of the red keys. At the end of the dance battle, the person with the most points is the winner. Each player will receive experience points and Den/BEATS according to what position they finished in.
If a single/group game (not including NPC, One-Two Party and Beat Up modes) is full, while also having the music set to random, a random event (also called a mission) will occur. This is where bonuses are given if you accomplish a certain challenge. Examples are not getting a specific beat judgment (e.g. no COOLs or no BADs), getting perfect combos (e.g. PERFECT X3), or getting a standing (e.g. getting number 1). The music can be random, random(new), or random from any range of tempos.