on January 14, 2022 in Europe. The build date is of February 10, 2021 and it is an upgrade to Dance Dance Revolution A cabinets. Other regions received A20 Plus earlier, in July 2020. This European update is the first instance where a regional Plus version of Dance Dance Revolution is released without the original version being available. Unofficial releases Dance Dance Revolution Megamix, Dance Dance Revolution Extreme Plus and Dance Dance Revolution Extreme Clean are commercial bootlegs of Dance Dance Revolution Extreme. Dance Dance Revolution Extreme Pro and Dance Dance Revolution Extreme Clarity are fan-made unofficial patches for Dance Dance Revolution Extreme. Pro enables the Marvelous timing window in all play modes, a feature that debuted in Dance Dance Revolution SuperNova 2, while also unlocking all songs automatically and using Oni scoring in all modes. It also adds support for BrightWhite, a fan-made alternative to the memory card reader. DDR Extreme Clarity improves upon Pro by adding Slow and Fast timing indicators, a feature only available in some circumstances beginning with Dance Dance Revolution X2. Other unofficial fan-made releases are typically powered by StepMania software, and generally use official Dance Dance Revolution releases as inspiration. Notes Dance Dance Revolution 2ndMix was updated after its initial release with a few new songs and the ability to connect to and play alongside Konami's DJ simulator games, Beatmania IIDX. While the official name of that version of DDR when alone was Dance Dance Revolution 2ndMix Link Version, when connected to the two Beatmania IIDX cabinets it was compatible with it was referred to by two other unique names. Along with the "International Versions" of Japan's DDR series, Korea specific versions of Dance Dance Revolution 3rdMix were released with a partly exclusive song list. Some of the Korean songs were later featured in the Japanese and international Dance Dance Revolution 4thMix, as well as the Plus and Solo versions. They have not been used in the DDR series since. Due to a licensing mishap during the launch of Dance Dance Revolution Ultramix, the game was temporarily unavailable to Canadian players, forcing them to wait for Konami to secure the rights to certain songs and rerelease the game for all of North America. The "second release" versions of Dance Dance Revolution SuperNova and Dancing Stage SuperNova in North America and Europe were a game disc replacement to fix audio syncing issues with the initial