Hi there -
After bruising (and maybe even cracking) a rib that way, the area, especially the cartilage between the ribs in that area is bound to be a little sensitive still, so playing with the Wii is one thing likely to aggravate what's probably costochondritis (an inflammation of that cartilage). This usually will respond to over-the-counter non-steroidal-
anti-inflammatory drugs like ibuprofin (Advil) or Naproxyn (Aleve) if it bothers you enough. Of course the other possibility would be to let it rest, but if you can knock out the
pain with one of the meds mentioned, it would be just as well to keep on playing with the Wii, as it's not only great fun but for some people it's actually a workout, which is a good thing.
If the
pain doesn't respond to rest or simple
pain meds you might want to mention it to your doctor, but this really isn't unusual this soon after a rib injury such as you suffered.
Hope this helps. Good luck to you. Please follow up with us here as needed.