You can use these for such things as changing number of rounds or unlocking hidden characters, such as Baek in Tekken 2 ... to unlock Star Blade from Devil Within. Go to the first room in Stage ...

Though this mode appears only in the PSP versions of Tekken 5 and 6, it served as a fun distraction ... but it also had Tekken: Devil Within. This was an entirely separate action-adventure game ...