Simplify the following text for a Grade 9 native English-speaking person.
Original: Ouendan , sometimes referred to as simply Ouendan , is a rhythm video game developed by iNiS and published by Nintendo for the Nintendo DS handheld game console in 2005 , for release only in Japan .
Simplified: Ouendan is a rhythm video game made by iNiS and published by Nintendo for the Nintendo DS handheld game console .