Gute Frage. In den Twitter Kommentaren gibt es einige Nennungen.
Has anyone made a PC game that did something with dual mouse input? Plugging multiple USB mice in just works, and most people probably have an extra mouse around somewhere. It would have some of the goodness of dual motion controllers, but with the precision and latency of mice.
— John Carmack (@ID_AA_Carmack) May 18, 2020