This one: It's not like the others.

While perhaps known in the west as one of the quirkier entries in Maxis' Sim series of computer games, its true origins are distinctly more eastern. Originally produced and released in Japan simply as The Tower, the SimCity inspired title enjoyed immediate success, and it was only after that Maxis stepped in to release the title in other locales. With a quick renaming of the title, SimTower quickly helped to restore the slightly ebbing popularity of the Sim series.