So we've already discussed how to handle this scenario in the general case. Now for what concerns this specific situation, what should we do?
simcity-classic vs simcity
It seems that the owners of the game franchise themselves now refer to the original game as Simcity Classic. The original game, after all, is now 23 years old and if we haven't gotten questions about it why would we start now?
simcity-1989 vs simcity-2013 and a simcity synonym pointing to the latter.
...or we could have none of their history retconning crap and do things our way, Electronic Arts be damned. Google should be smart enough to use the year in the title to know what we're talking about anyway, right?