What are you downloading it on?
If its a pc or a laptop download the pc one and then go to the its folder left click on it and find extract then let it extract after that you should find the unziped folder of 'GoodLuckMinutesMan', open it and find in it the application it should say 'application' on the far right then click to open it and you should be able to play the game.
P.S. If a warning pops up click 'see more' then click 'run anyway'
Hope it helps :D