Hi Folks,
Currently, AlphaLink works best with an Xbox controller, but it does have a first pass of keyboard and mouse support.
Our first update will be better mouse and keyboard support, which is already underway. The image prompts and controller diagrams will also come with this update.
Part of being on Steam Early Access is being able to take in feedback on what controllers we support next. So, if you have a favorite that you would like to see supported next, please drop us a line!