"Mario & Sonic at the Olympic Games" for the Wii

My mates brother recently bought a Nintendo Wii and it seems all my mate (his brother), another of my mates and I have been doing is playing "Mario & Sonic at the Olympic Games" for two days on the bounce. We actually completed it tonight, was quite interesting. It's really addictive because you want to complete it, but now we have I rekon it'll be boring as shite cos there's nowt to play for