Samsung has updated its Game Launcher application with support for DeX. However, as noted by SamMobile, the feature isn’t actually worth using as games are failing to recognize that a keyboard and mouse are a valid input method.
That doesn’t mean that Game Launcher won’t play nicely with DeX in the future, though. All of the resources are in place, including a dedicated “Supported by DeX” section of the Galaxy Apps Store, for it to work.
Don’t expect PC-like fluidity or performance
All Samsung needs to do is roll out another upgrade to enable support for peripherals, then it should be good to go. That said, don’t expect PC-like fluidity performance, or even titles, for that matter.