I can it says The code execution cannot proceed because UnityPlayer.dll was not found
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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.