Bae Yong-joon
In 2009 and 2010, he was the star of D3 Publisher's Nintendo DS edutainment series Bae Yong-joon to Manabu Kankokugo DS ("Learn Korean with Bae Yong-joon"), consisting of three games: Bae Yong-joon to Manabu Kankokugo DS (beginner level), Bae Yong-joon to Manabu Kankokugo DS Date Hen (intermediate level), and Bae Yong-joon to Manabu Kankokugo DS Test Hen (advanced level).