A few years ago, Jolin was endorsing an online game called 唯舞獨尊Online We Dancing Online:
Promo card included in 唯舞獨尊 Dancing Forever
But today, another version of this game will be released under the name 唯舞獨尊DX We Dancing DX, and guess who will endorse it ;) Check the pictures below:
Facebook page: https://www.facebook.com/we5DX
EDIT: Jolin provided a theme song for the game scheduled to be released in October!