are you stuck in the main menu? you move left/right with your mouse (the little light sprite) and click on "Start". things that are clickable get highlighted... after that it's keyboard and mouse (like any first person game).
thank you so much for confirming that. it's good to know that "work computer" made it work. i need to fix that UX issue because i think a lot of people have issues running it since they choose the higher options when "work computer" is for them. it helps to have that confirmed. thank you!