It's a Japanese game show made in Japan hosted by Japanese people with Japanese contestants. The contestants seem to always be the same people.
I found it by searching some of the contestants names... It's called クイズ!ヘキサゴンII or QUIZ HEXAGON 2. It runs at 7 PM every Wednesday night on Fuji TV.
Anyway, thanks for the help!
This is from the actual show (in Japanese)
YouTube - Rules of Quiz Hexagon II very simple...