SteamDB keeps a list of upcoming free promotions so you can keep abreast of all the free weekends on Steam in advance. It also notes when games will be free-to-keep, which is why we can see that Total War: Shogun 2 will be given away to anyone who grabs it between April 27 and May 1.

Shogun 2 is nine years old but it's still my favorite of the historical Total War games, with a perfect map size to feel conquerable without having to throw away hundreds of hours and a theme that breathed life into blocks of troops marching across maps. Just last year Malindy Hetfeld reminisced about how beautiful and ambitious it was.