M.D.
I suggest you go to a store like GameStop (do they have those where you are?). You need a second controller but not a second game pad - controllers are a lot less expensive than the game pad that came with it. A Wii U can play both Wii U games as well as regular Wii games. You can buy second hand Wii games really inexpensively. You can even find them on Craigslist.