Deep Silver was a day late publishing Metro Exodus on Steam. Recall the outrage of removing the game at the last minute and selling the game exclusively with the Epic loader alienated a lot of the community.
Today the game is selling briskly but this may have been motivated by the 40% discount that the given on launch day. The entire Metro series are also being offered with substantial discounts.
DLC is also being offered for Metro Exodus. The increasingly common season pass is also being offered.
The system requirements are the same as the Xbox One. Most PC gamers today have rigs that are substantially more powerful. The is using Denuvo which is know here to be CPU demanding.
Given Metro Exodus is a single player game, the game play is standard for a shooter.