, sometimes abbreviated as , is the second game in the Dance Dance Revolution series of music video games. It was released as an arcade game by Konami on January 29, 1999. The initial release has a total of 33 songs: 22 brand new songs, and 11 from its predecessor, Dance Dance Revolution (1998 video game). Gameplay The core gameplay and scoring system of 2ndMix is the same as the previous version of Dance Dance Revolution. The arrows in 2ndMix do not have different color-cycles based on their time signature. The "Vivid" arrow colors familiar to players of later mixes were not introduced until the club versions. All foot panel mods have been turned off and the difficulty and style of a song cannot be changed. Variants Best of Cool Dancers is a music video game by Konami. It was revealed on February 11, 1999 at select locations in Japan and was used solely for ranking Dance Dance Revolution players prior to a company-held tournament. The game featured only four songs, all four of which are from previous releases and runs off of a Dance Dance Revolution 2ndMix machine. The four songs of Dance Dance Revolution Best of Cool Dancers each have a set level of difficulty and style of play. Each song is used for a specific round in the tournament qualifications. Link Version , released on April 28, 1999, introduced the ability for players to save high scores and play custom step edits using their PlayStation memory cards. A player would first need to format the memory card with "Link Data" using the home version of 2ndMix, and then insert the card into one of two slots on the front of the arcade cabinet. Link Version includes 5 new songs, in addition to the full 2ndMix song list. After the release of Link Version, Link Data features had been implemented in every future DDR version for the System 573. Dance Dance Revolution SuperNOVA originally planned to include PlayStation 2 memory card support, but the functionality was removed and replaced with e-Amusement instead, albeit only for Asia. X3 vs. 2ndMIX 2ndRemix , the home version of 2ndMix, was released in Japan on August 26, 1999, for the Sony PlayStation. It includes 34 songs, seven of which are new to this version and are hidden and unlockable. Two of the hidden songs were previews of the next arcade version, Dance