The Legend of Zelda series could better be described as The Legend of Zelda formula, these days; so there are a lot of recurring elements.
Featured in both the 3rd Satellaview game, and the 3DS one.
Something about Z-targeting, and using a letterbox effect to signify non-gameplay sections (OOT invented that, no?).
Also the popularization of the context-sensitive action button, as seen in OoT and further enhanced in Resident Evil 4.