Adrenaline Blaster

Released in Pump It Up XX, this is the first piece credited to QWertism, the joint name used by Quree and WyvernP. Both the song and its charts clearly carry the DNA of HTTP, with visuals handled by KURORAK. Throughout the XX era nearly all of its charts were viewed as overrated for their level or treated as upper-tier, which earned the song affectionate nicknames like Calorie Blaster and Mental Blaster for how draining it could be.

On PHOENIX the chart set spans Single 3, 5, 8, 15, 18 and 21, Double 12, 19 and 23, plus a two-player Co-op. S15 was bumped from 14 to 15 in PHOENIX. S18 is a watered-down take on S21: it throws long, tiring runs at you, but the relatively low BPM keeps it manageable for an 18. S21 is the real boss song here, layering tight high-angle twists with single-note double-clicks, a staircase bridge burst, and a highlight section of twists so extreme they hardly seem possible to full-twist. Because it grants only a single potion, gauge management is essential, and the finale closes on a center-less twist that can wipe you out the instant you relax. It is reckoned to be slightly easier than Arirang's S22.

D19 spreads S18 out with simple but punishingly long runs that overwhelm players in its range; it debuted as an 18 and rose to 19 in PHOENIX. D23 adapts S21 to Double, adding Half-Double and far heavier body rotation along with a much higher stamina cost, and went from 22 to 23. The chart design credits go to SUNNY (S3/S5), FEFEMZ* (S8/S15/S18/S21), ZELLLOOO (Double) and DP4 (Co-op). In XX, S21 was unlocked by earning an S rank or better with break-on on S18, and D22 by an SS or better on D18. The Co-op was added in version 2.03 and tweaked in 2.04; a DP4 chart also once existed but was later removed.