addition, a new cabinet style has been added to the lineup featuring a futuristic design and a 42' plasma display. Yahpp, who split from the BanYa team, became the project lead leading to a style similar to the early games. Unlike in earlier games, the difficulty level of a song in NX is not visually represented by a number. Levels 1 through 14 are shown as star icons, each level corresponding to a half icon, while levels 15 to 22 are shown as skull icons, with each level corresponding to a whole icon. Pump It Up NX2 displays both the stars/skulls and a digital level indicator. The Extra and the Prex series of games also use this graphical style. A "????????" rating is given to songs that are "beyond the charts", gimmick charts that are meant to be impossible for one player, or charts that are meant for two players at the same time. The "????????" rating was kept for extreme songs in later games outside of this series. NX2 released in December 2007, added support for Andamiro's proprietary USB flash drives, which save player progress and worldwide ranking. A new metagame life system was introduced that allows players to play four songs instead of three if they have life left at the end of three songs. Getting an A ranking or higher allows the player to maintain their life points, however, anything lower than an A will cost the player life points. If a player does especially poorly their set will be reduced to only two songs. The Pump It Up 2010 Fiesta:10th Anniversary Version added two new mission modes (Quest and Skill Up) and removed difficulty levels in favor of chart options. The sequels Fiesta 2 (2012) and PRIME (2014) feature a wide selection of music with Prime introducing the global Rank Mode. The next game in the series, PRIME 2(2016), introduced a new speed system named Auto Velocity, which is calculated by dividing the players Auto Velocity with the BPM of the selected song. In XX(2019), A number of new features have appeared, such as Online Matching, a new title feature, step rewards and more. It is also the first game to only support HD, therefore, only supporting MK9 and MK10 systems. The Pro/Infinity series Pump It Up Pro was released by Fun in Motion and Andamiro in 2007. The product is a spin-off of Pump It