Forget the busted remake. Forget the cash-hungry mobile games. The best SimCity Maxis ever made is still available, and as of now it's a free download on EA's Origin store.
I'm of course talking about SimCity 2000, the game that struck the perfect balance between accessibility and the finer tuning of city-management. More devoted fans might prefer SimCity 4, and in some ways I do myself, but there's just something about 2000's look, toolset, disasters (which remain the series' best) and obsession with arcologies that make it stand out.
That and the whole "reticulating splines" gag, which started here.
SimCity 2000 [Origin]