Okay guys. UPDATE.
I called the game company that sells the game I bought on the App store. Keep in mind, there are still other games giving me the same problem, but since this game the was most important/expensive, I contacted them first. If anyone wants to know, it was Feral Interactive, creator of a LOT of games on the app store.
So, called them and explained the problem, and before I could even barely start explaining, the guy knew all about this problem, and said he has been answering over 400 calls and tons of emails everyday for the last few days/weeks.
He said that they have contacted Apple numerous times, and going to meet with some group from Apple to talk about this and resolve it. He said that ever since about a week or two ago Apple completely CHANGED the way applications are installed on the Macs. I didn't quite understand it all, but something about when you download an App, the App store makes it very simple and turns it into a One Click automatic process when you click "install." But, since the Change, now the easy process of installing an app from the app store somehow doesn't work anymore, and there are two options he told me.
First, I can call Apple, they are very good he said at giving refunds, and no questions asked they will give me my money back.
Second, since I didn't want that and wanted my app, he said if I sent him a screen shot of my purchases page where it says "app won't download", he can send me a special link to download the app from his company straight to my computer, without going through the app store.
Well, I went with the second choice, and sure enough it worked very easily, and now I have the app on my computer like normal.
But, just want to let everyone know, that he has been dealing with this constantly for the last few days, or a week or two, and its NOT the apps themselves!
IT IS APPLE, and whatever they changed a few days ago, so now the simple process of going to app store, clicking install, is not working anymore, and yes this is with other operating systems too.
He said he and his team are meeting with apple this week to try to get this fixed, and they AND apple know all about the issue everyone is having.
I hope this helps anyone wondering what the **** is going on.
dave