The Wave Race game for Nintendo 64 is called "Wave Race 64 - Kawasaki Jet Ski" in a ROM set. On Wikipedia, which I've previously considered authoritative for titles of commercial products, it's simply called "Wave Race 64". On MobyGames, it's called "Wave Race 64: Kawasaki Jet Ski".
Three different titles for the same game. And it doesn't seem to be based on the region in this case, unlike other games which may have completely different subtitles or even full titles based on the region.
How am I supposed to know what a game actually was officially called? Is there a massive list of the real, official titles for all video games? (Which is not just "guessed" or "approximated".)
I'm not just asking for this game in particular, but in general. Clearly, there is no consistency between Wikipedia, MobyGames and the filenames in ROM sets.
For this particular case (and in many other cases), the box art is of little help, since the "subtitle" is ambiguous at best: https://upload.wikimedia.org/wikipedia/en/e/e6/Wave_Race_64_Coverart.png