Thank you for showing interest in our game. The keyboard and mouse support will become available on the 16th of March.
Where can I find out which buttons on a keyboard and mouse do what? All that I am able to do with my keyboard is move around the little circle on the menu screen.
Ah, I figured it out. My Itch.io client by default selected the out-of-date version of the software, before keyboard support, and the instructions as to "hold down the LMB" were found in the update logs.