Total War: Eras
Total War: Eras is a compilation officially made by Creative Assembly near the beginning of the Total War series. It included Shogun: Total War, Medieval: Total War and Rome: Total War (plus its expansions). The pack included the three games plus bonus materials.
The name was later adopted by Total War Center to organize certain areas. Previously, Total War Eras was a category on the front page to include the original games. After the categories were split, the distinction remains for the After Action Reports section of TWC, where AARs based on the aforementioned titles are collected as 'Eras'.