有多个视图的视图控制器合适吗?

I have a quick question in regards to my app that I am developing for school. In my app we have 5 unique games that the user can play. However, each game has 2 modes, normal and hard. What is the best way about going to do this. Currently I have my first game as two separate view controllers and are called based on the difficulty that is wanted(one called normal_cstars and hard_cstars). I am wondering if this is efficient because each view controller has a .h, .m, and a .xib. Is it possible to have a view controller that has two separate views and how would you go about accomplishing this. I have a quick question in regards to my app th