Sorry, that's just odd. Like someone who hasn't heard of McDonalds. It's EVERYWHERE.
Basically, they just take 15 strangers and lock them in a house full of cameras, and they have to fight for "head of household" and the right to evict people out and the winner gets a prize - in Canada it's $100,000, a new car and $25,000 gift certificate. I think the US version they get $500,000
It can certaintly be entertaining!
Shades of Lord of the Flies. Sounds perfectly horrid.