From the video game side, I'd say Assassin's Creed would count. I'd count AC I, II and III as forming a trilogy-with-frills, as they wrap up a single major story that the later installments of the franchise – to my limited knowledge – have not revived.
Although, whether 2 or 3 is "better" is somewhat up to interpretation. The consensus among my friends is that AC II is either the peak of the series or really close to that, but it might be partially due to *relative* quality instead of absolute.