Well, you can get Nintendo kind of sounds really loud... it is the mix and the arrangement and the particular genre that allows that kind of aesthetics.
It can't work for rock or acoustic styles unless you EQ the sounds to be similarly unnaturally limited in frequency range as those sounds and everything only taking its own space. What sounds proper for dubstep would sound really bad for more acoustic styles.
Apparently the only mastering there is on those albums is iZotope Maximizer.
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