Some apps are only created for certain Windows versions as seen with Dungeon Keeper. To specify a particular Windows Version for a particular app you can open winecfg navigate to Applications and select Add Application, then search for the applications executable file and click on Open. Now select the application from the list and then change the Windows Version for it. This way, only this application will have an specific version of Windows assigned to it, instead of globally changing the Windows version for all apps.