I've been playing Shogun 2 since it's release date on my iMac (mid 2011) equipped with Os X 10.13, but when I tried to launch the game today, it wouldn't run. It says that my OS X is outdated and i need a newer version to run. It seems weird to me that now it requires OS X 10.14 that came out in 2018 when the game was made in 2011. Also on steam it says that you can play even with 10.9, so I can't figure out why this is happening. Do you guys have any idea?