Shogun: Total War was released in 2000, 11 years before Total War: Shogun 2, so you can probably guess that they are very different.
What is the difference between Total War: Shogun 2 and Shogun: Total War? The game consists of a turn-based strategy aspect, which plays out on a 3-D map of Japan including the islands of Honshu, Shikoku and Kyushu, as well as a real-time tactical aspect which launches anytime you engage in combat.
Total War: Shogun 2 is a PC strategy game developed by The Creative Assembly and published by SEGA.