I am having trouble installing i have downloaded the game. i click on it to open it and my comp. just thinks and then nothing. any help please..

I have a box, tell me what is inside.

Do you see the point, you provide absolutely no information on your computer or the game, and expect a debug. At minimum, game name, how you install and use it, system specs, operating system etc. If windows make sure you have installed outside windows folders, something like c:/mygames, and enabled direct play if on win 10.