Im thinking of having my own windows phone, what im really concerned about is if have the same store as 'win 8', i fell in love w/ robotek and some other games on win 8~
The answer is yes and no. There are some Universal apps that you buy and you get it for both Windows Phone and Windows 8. There are some apps that are on both but have to be bought separately. There are some apps that are one but not the other. It's up to the publisher.
I would recommend browsing the online web version of the Windows Phone app store to see what they have.