Hello! Could you tell me if you get any type of error on the screen? From my computer I have had no problems running it.
Viewing post in The Challenges Of Mictlán comments
Oh, that may happen because the .exe is not located in the same folder as "UnityPlayer.dll", try to keep "TheChallengesOfMictlan.exe" together with the rest of the files that appear when you unzip the Zip. This occurs since "UnityPlayer.dll" is an essential dependency, and since it does not have an installer it is necessary to keep all the files together.