Intelligent Qube / Kurushi Hidden Turbo Mode 

The released game contains one still usable remnant of a disabled debug mode, super speed. The video has not been sped up, nor has any emulator frame limiting been disabled. This is all the games own work. Enabling this disables the idle demos.
At an earlier point in development, it was enableable by holding Down + Triangle + R1 + L2 and pressing Select. But now you have to Gameshark it (press Select):
30076BC8 0001 (JP - SCPS-10029)
3006D561 0001 (EU - SCES-00866)
3006C6E5 0001 (US - SCUS-94181)