Ice, you really should invest in some :blink: The WIi is pretty cheap now, and you can download at least some of the old Metroid games on the virtual console. Another possible route to go, would be picking up an old system, either online, or at a local store.
I'm not sure if the games are available on the Wii U. If it taps into the same website as the original Wii, they should still be there; however, the programming is more then likely different on the Wii U, unless there is some kind of reverse compatibility feature. It makes sense to buy a new system, over a classic in that case.