the central trigger of the N64 controler.
but out of these... well the 360 buttons are a rip of the SNES... they even made it as opposit to the original as it could, the letters are inverted 2 by 2 and the colors are shuffled in a different way... so a double shuffle to not look like a copy (yet they kept the 4 colors...)
At least the PS buttons introduced (did they?) the shapes...i'll go with square too just because when the PS1 came out I was a huge square fan (SNES years).
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