Dance Dance Revolution 3rdMix (ダンスダンスレボリューションサードミックス, Dansu Dansu Reboryūshon SādoMikkusu), sometimes abbreviated as 3rdMix, is the third game in the Dance Dance Revolution series of music video games. It was released in Japanese arcades by Konami on Saturday October 30, 1999. It has a total of 72 songs, 35 of which are new to the arcade series. The game offers a 2ndMix mode, which only includes the 37 songs available in 2ndMix Link. 3rdMix was reissued as Dance Dance Revolution 3rdMix Plus on June 21, 2000. This title, exclusive to Japan, adds 17 songs: three new DanceMania licenses, seven K-Pop tracks from VER.KOREA and seven Konami Originals.[ Two of these Konami Originals made their arcade premiere in Dancing Stage EuroMix. 3rdMix Plus removes SSR mode and adds Maniac difficulty in 3rdMix mode.
Different versions of Dance Dance Revolution 3rdMix were released for other countries in Asia. The first release in 1999 removed four new songs, made "Strictly Business" unavailable outside of 2ndMix mode and had a bug when trying to enter the Shuffle modification. Two versions of the game were later released exclusively in South Korea: VER.KOREA on April 1, 2000 and VER.KOREA2 on May 1, 2000. VER.KOREA features the same song changes found in the Asia version, but fixes the Shuffle bug and adds seven new Korean pop songs in 3rdMix and SSR modes. VER.KOREA2 is identical to VER.KOREA, but adds 9 more K-Pop songs.
International variants include Dancing Stage EuroMix and Dance Dance Revolution USA. EuroMix was released in European arcades on August 2000. It has a reduced song list of 28 songs, half which are Konami Originals and half which are licenses. Of the licenses, eight are from Universal Music Group and are only available in this arcade release. Six Konami Originals can be added by activating Internet Ranking, for a total of 34 songs. USA was released in North American arcades in October 2000. It has a reduced song list of 26 songs: six licenses and 20 Konami Originals. EuroMix with Internet Ranking and USA share four licenses and 15 Konami Originals in common, including two 3rdMix Plus tracks: "Love This Feelin'" and "TRIP MACHINE ～luv mix～".