For Windows you have to extract the file and then double left click PotionAccidents.exe
for Apple google says you have to extract the file and then double left click PotionAccident.app
for Linux google says to extract the file and run PotionAccidents (I'm looking at my folders and it says "PotionAccidentsV0.1.1+.86x_64" don't mind the V0.1.1+ i think i just forgot to update the file name). if Linux is broken or if there isn't the new content (bed room area and day 2 content) then please tell me. I will get that fixed as soon as possible.