make sure you download the linux version, and extract the “Does counting sheep help witches sleep.pck” and “Does counting sheep help witches sleep.x86_64” files into the same folder.
then for me, i right clicked the “.x86_64” file and was able to enable a checkbox that said “is executable”.
then double clicking the “.x86_64” file ran the game. (i was on Ubuntu so if you’re on a different one, it might not be the same)
if that doesn’t work, i believe you can run it by running the command “./Does counting sheep help witches sleep.x86_64” but i’m not sure on that one.