Hi Theresel,
Thank you for posting your query on Microsoft Community.
I understand that you are unable to find apps/games on Windows Store. We will assist you with it.
I suggest you to refer the following Microsoft help article and check.
Why can’t I find or install an app from Windows store.
http://windows.microsoft.com/en-US/windows-8/why-find-install-app-windows-store
Note: The steps for Windows 8/8.1 applies to Windows 10 as well.
Hope this information is helpful. For any further query, feel free to contact us.
Thank you.