CroTeam Serious Sam Fusion includes Vulkan support for all recent games
In a recent blog post, Croteam announced 'Serious Sam Fusion 2017' is the label the team has given to a large update that will be hitting all of its recent games. All games starting at Serious Sam 3 will be playable on SteamOS, Linux, and macOS. Croteam is also removing DirectX 9 support in favour of the Vulkan API.