There were a few nice games present in the Windows Phone 7, but majority of them were physics based or puzzle games. There weren’t powerful games like ‘Dead trigger’ and similar ones.
However, it is being said that the games section will also go through changes in the Windows Phone 8. CEO of Unity, David Helgason, said that they will be releasing their game engine to both the platforms of windows, WP8 and Windows 8. That indeed implies that we will now get to see some powerful games in both the latest version of Windows.
Unity is following a great promotional strategy by covering almost all the latest platforms releasing. Thus, it was necessary for them to be on WP 8 one as well.